diff --git a/src/3d/mapsquare.ts b/src/3d/mapsquare.ts
index 892bf5b..5d1b96a 100644
--- a/src/3d/mapsquare.ts
+++ b/src/3d/mapsquare.ts
@@ -626,6 +626,33 @@ export class TileGrid implements TileGridSource {
 		}
 		return file;
 	}
+
+	// new version that includes each tile corner, not just center
+	// getHeightCollisionFile(x: number, z: number, level: number, xsize: number, zsize: number) {
+	// 	let file = new Uint16Array(xsize * zsize * 5);
+	// 	for (let dz = 0; dz < zsize; dz++) {
+	// 		for (let dx = 0; dx < xsize; dx++) {
+	// 			let tile = this.getTile(x + dx, z + dz, level);
+	// 			if (tile) {
+	// 				let index = (dx + dz * xsize) * 5;
+	// 				// base 3 representation of collision
+	// 				let colint = 0;
+	// 				let col = tile.effectiveCollision!;
+	// 				for (let i = 0; i < 9; i++) {
+	// 					let v = (col.walk[i] ? col.sight[i] ? 2 : 1 : 0);
+	// 					colint += Math.pow(3, i) * v;
+	// 				}
+	// 				// negative height can happen along some coastlines apparently
+	// 				file[index + 0] = Math.max(0, tile.playery00 / 16);
+	// 				file[index + 1] = Math.max(0, tile.playery01 / 16);
+	// 				file[index + 2] = Math.max(0, tile.playery10 / 16);
+	// 				file[index + 3] = Math.max(0, tile.playery11 / 16);
+	// 				file[index + 4] = colint;
+	// 			}
+	// 		}
+	// 	}
+	// 	return file;
+	// }
 	getTile(x: number, z: number, level: number) {
 		x -= this.xoffset;
 		z -= this.zoffset;
diff --git a/src/map/index.ts b/src/map/index.ts
index 7636e21..5c5300e 100644
--- a/src/map/index.ts
+++ b/src/map/index.ts
@@ -1004,7 +1004,7 @@ const rendermodeHeight: RenderMode<"height"> = function (engine, config, cnf, de
 	}] satisfies RenderTask[]
 }
 
-const rendermodeLocs: RenderMode<"height"> = function (engine, config, cnf, deps, baseoutput, singlerect) {
+const rendermodeLocs: RenderMode<"locs"> = function (engine, config, cnf, deps, baseoutput, singlerect) {
 	let thiscnf = cnf;
 	let filename = `${thiscnf.name}/${singlerect.x}-${singlerect.z}.${cnf.usegzip ? "json.gz" : "json"}`;
 	return [{
@@ -1026,7 +1026,7 @@ const rendermodeLocs: RenderMode<"height"> = function (engine, config, cnf, deps
 	}] satisfies RenderTask[];
 }
 
-const rendermodeMaplabels: RenderMode<"height"> = function (engine, config, cnf, deps, baseoutput, singlerect) {
+const rendermodeMaplabels: RenderMode<"maplabels"> = function (engine, config, cnf, deps, baseoutput, singlerect) {
 	let thiscnf = cnf;
 	let filename = `${thiscnf.name}/${singlerect.x}-${singlerect.z}.${cnf.usegzip ? "json.gz" : "json"}`;
 	return [{
diff --git a/src/scripts/groupskeletons.ts b/src/scripts/groupskeletons.ts
index 3d41e12..aa1de2c 100644
--- a/src/scripts/groupskeletons.ts
+++ b/src/scripts/groupskeletons.ts
@@ -8,6 +8,7 @@ import { getOrInsert } from "../utils";
 
 export async function getSequenceGroups(output: ScriptOutput, outdir: ScriptFS, source: CacheFileSource) {
     let frametoframemap = new Map<number, number>();
+    output.log(`starting frames`)
     let framesindex = await source.getCacheIndex(cacheMajors.frames);
     for (let frameid of framesindex) {
         if (!frameid) { continue; }
@@ -20,16 +21,24 @@ export async function getSequenceGroups(output: ScriptOutput, outdir: ScriptFS,
     }
     output.log(`completed frames`);
 
+    output.log(`starting skeletals`)
     let skeletaltoframemap = new Map<number, number>();
     let skeletalindex = await source.getCacheIndex(cacheMajors.skeletalAnims);
     for (let skeletalid of skeletalindex) {
         if (!skeletalid) { continue; }
-        let animfile = await source.getFileById(cacheMajors.skeletalAnims, skeletalid.minor);
-        let anim = parse.skeletalAnim.read(animfile, source);
-        skeletaltoframemap.set(skeletalid.minor, anim.framebase);
+        try {
+            let animfile = await source.getFileById(cacheMajors.skeletalAnims, skeletalid.minor);
+            let anim = parse.skeletalAnim.read(animfile, source);
+            skeletaltoframemap.set(skeletalid.minor, anim.framebase);
+        } catch (e) {
+            // currently known error in the bzip2 decompression on file 56.2242
+            // seems like an error in the js bzip2 implementation
+            output.log(`failed to parse skeletal ${skeletalid.minor}`);
+        }
     }
     output.log(`completed skeletals`);
 
+    output.log(`starting sequences`);
     let seqperframemap = new Map<number, number[]>();
     let sequenceindex = await source.getCacheIndex(cacheMajors.sequences);
     for (let seqid of sequenceindex) {
diff --git a/src/scripts/rendercutscene.ts b/src/scripts/rendercutscene.ts
index 539d0d4..8ce324d 100644
--- a/src/scripts/rendercutscene.ts
+++ b/src/scripts/rendercutscene.ts
@@ -107,7 +107,7 @@ export async function renderCutscene(engine: CacheFileSource, file: Buffer) {
                     }
 
                     let positionstyle = `position:absolute; top:0px; left:0px; transform-origin:center;margin-left:${-img.width / 2}px; margin-top:${-img.height / 2}px;`;
-                    html += `<img src="${pngfile}" width="${img.width}" height="${img.height}" style="${positionstyle} animation:${anims.join()};">\n`;
+                    html += `<img data-spriteid="${img.spriteid}" src="${pngfile}" width="${img.width}" height="${img.height}" style="${positionstyle} animation:${anims.join()};">\n`;
                 }
             }
             html += "</div>";