app/src/model.js

@@ -143,6 +143,7 @@
 				}
 			});
 			if ( changed ) {
+				this.emitter.trigger( "change:before", [ changedAttributes, createdAttributes ] );
 				this.emitter.trigger( "change", [ changedAttributes, createdAttributes ] );
 			}
 			return this;
@@ -207,7 +208,7 @@
 		this.host = obj.host;
 		this.orderedComponentsDfd = $.Deferred();
 		this.themeParamsUnzipping = $.Deferred().resolve();
-		this.on( "change", $.proxy( this._change, this ) );
+		this.on( "change:before", $.proxy( this._change, this ) );
 	};
 
 	$.extend( DownloadBuilderModel.prototype, Model.prototype, {
@@ -381,7 +382,7 @@
 		Model.call( this );
 		this.baseVars = obj.baseVars;
 		this.host = obj.host;
-		this.on( "change", $.proxy( this._change, this ) );
+		this.on( "change:before", $.proxy( this._change, this ) );
 	};
 
 	$.extend( ThemeRollerModel.prototype, Model.prototype, {
@@ -464,7 +465,7 @@
 		},
 
 		parsethemeUrl: function() {
-			var attributes = omit( this.attributes, [ "downloadParams" ] ),
+			var attributes = omit( this.attributes, [ "downloadParams", "zThemeParams" ] ),
 				downloadParams = ( "downloadParams" in this.attributes ? QueryString.decode( this.attributes.downloadParams ) : {} );
 			if ( downloadParams.version ) {
 				attributes.version = downloadParams.version;

lib/cache.js

@@ -21,8 +21,8 @@ cacheCron = function() {
 		});
 
 		logger.log( cache.name + " Cleanup:", count );
-		cacheCronTimeout = setTimeout( cacheCron, cacheExpiresTime );
 	});
+	cacheCronTimeout = setTimeout( cacheCron, cacheExpiresTime );
 };
 
 Cache = function( name ) {

lib/themeroller.js

@@ -97,6 +97,9 @@ function ThemeRoller( options ) {
 		delete vars.name;
 		delete vars.scope;
 	}
+	if ( vars && vars.zThemeParams ) {
+		throw new Error( "vars.zThemeParams unsupported at the moment. Unzipped vars only. (or need to make ThemeRoller async)" );
+	}
 	if ( options.jqueryUi instanceof JqueryUi ) {
 		this.jqueryUi = options.jqueryUi;
 	} else if ( options.version ) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "download.jqueryui.com",
-  "version": "1.10.3-5",
+  "version": "1.10.3-6",
   "dependencies": {
     "archiver": "0.4.1",
     "async": "0.1.22",

themeroller.js

@@ -42,6 +42,9 @@ var Frontend = function( args ) {
 
 Frontend.prototype = {
 	index: function( vars, options ) {
+		if ( vars && "zThemeParams" in vars ) {
+			delete vars.zThemeParams;
+		}
 		var theme = new ThemeRoller({
 			vars: vars
 		});