diff --git a/application/language/ar-EG/form_validation_lang.php b/application/language/ar-EG/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/ar-EG/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/az-AZ/form_validation_lang.php b/application/language/az-AZ/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/az-AZ/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/bg/form_validation_lang.php b/application/language/bg/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/bg/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/de-CH/form_validation_lang.php b/application/language/de-CH/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/de-CH/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/de/form_validation_lang.php b/application/language/de/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/de/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/en-GB/error_lang.php b/application/language/en-GB/error_lang.php
index 0dcc01549..24cf7247c 100644
--- a/application/language/en-GB/error_lang.php
+++ b/application/language/en-GB/error_lang.php
@@ -1,4 +1,4 @@
 <?php 
 
 $lang["error_no_permission_module"] = "You do not have the permission to access the module named";
-$lang["error_unknown"] = "unknown";
+$lang["error_unknown"] = "Unexpected error";
diff --git a/application/language/en-GB/form_validation_lang.php b/application/language/en-GB/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/en-GB/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/en-US/error_lang.php b/application/language/en-US/error_lang.php
index bad97dc8f..992eaa731 100644
--- a/application/language/en-US/error_lang.php
+++ b/application/language/en-US/error_lang.php
@@ -1,4 +1,4 @@
 <?php 
 
 $lang["error_no_permission_module"] = "You do not have permission to access the module named";
-$lang["error_unknown"] = "unknown";
+$lang["error_unknown"] = "Unexpected error";
diff --git a/application/language/en-US/form_validation_lang.php b/application/language/en-US/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/en-US/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/es/form_validation_lang.php b/application/language/es/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/es/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/fr/form_validation_lang.php b/application/language/fr/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/fr/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/hr-HR/form_validation_lang.php b/application/language/hr-HR/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/hr-HR/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/hu-HU/form_validation_lang.php b/application/language/hu-HU/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/hu-HU/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/id/form_validation_lang.php b/application/language/id/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/id/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/it/form_validation_lang.php b/application/language/it/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/it/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/km/form_validation_lang.php b/application/language/km/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/km/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/lo/form_validation_lang.php b/application/language/lo/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/lo/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/nl-BE/form_validation_lang.php b/application/language/nl-BE/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/nl-BE/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/pt-BR/form_validation_lang.php b/application/language/pt-BR/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/pt-BR/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/ru/form_validation_lang.php b/application/language/ru/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/ru/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/sv/form_validation_lang.php b/application/language/sv/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/sv/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/th/form_validation_lang.php b/application/language/th/form_validation_lang.php
deleted file mode 100644
index e577d073f..000000000
--- a/application/language/th/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "The %s field may only contain alpha-numeric characters, underscores, and dashes.";
-$lang["alpha_numeric"] = "The %s field may only contain alpha-numeric characters.";
-$lang["exact_length"] = "The %s field must be exactly %s characters in length.";
-$lang["greater_than"] = "The %s field must contain a number greater than %s.";
-$lang["is_natural"] = "The %s field must contain only positive numbers.";
-$lang["is_natural_no_zero"] = "The %s field must contain a number greater than zero.";
-$lang["is_numeric"] = "The %s field must contain only numeric characters.";
-$lang["is_unique"] = "The %s field must contain a unique value.";
-$lang["less_than"] = "The %s field must contain a number less than %s.";
-$lang["max_length"] = "The %s field can not exceed %s characters in length.";
-$lang["min_length"] = "The %s field must be at least %s characters in length.";
-$lang["regex_match"] = "The %s field is not in the correct format.";
-$lang["valid_email"] = "The %s field must contain a valid email address.";
-$lang["valid_emails"] = "The %s field must contain all valid email addresses.";
-$lang["valid_ip"] = "The %s field must contain a valid IP.";
-$lang["valid_url"] = "The %s field must contain a valid URL.";
diff --git a/application/language/tr/form_validation_lang.php b/application/language/tr/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/tr/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/vi/form_validation_lang.php b/application/language/vi/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/vi/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";
diff --git a/application/language/zh/form_validation_lang.php b/application/language/zh/form_validation_lang.php
deleted file mode 100644
index bc8b34e66..000000000
--- a/application/language/zh/form_validation_lang.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php 
-
-$lang["alpha_dash"] = "";
-$lang["alpha_numeric"] = "";
-$lang["exact_length"] = "";
-$lang["greater_than"] = "";
-$lang["is_natural"] = "";
-$lang["is_natural_no_zero"] = "";
-$lang["is_numeric"] = "";
-$lang["is_unique"] = "";
-$lang["less_than"] = "";
-$lang["max_length"] = "";
-$lang["min_length"] = "";
-$lang["regex_match"] = "";
-$lang["valid_email"] = "";
-$lang["valid_emails"] = "";
-$lang["valid_ip"] = "";
-$lang["valid_url"] = "";