Error on .run() in bridge script

Hello,

Can someone please help me on why the script is crashing on the createThumbnails().run(); line because i am pretty new to this.

Thanks!

#target bridge function createThumbnails() {     try     {         this.requiredContext = "\tExecute against Bridge main engine.\nBridge must be running.";         $.level = 1; // Debugging level         this.panelRef = null;         //alert(arguments[0]);         Folder("c:\\temp\\centraliser").create();         var loc = new Thumbnail(Folder("/C"));         loc.open();         this.t = new Thumbnail(File("/c/temp/aaa/BIB2.ai"));         app.document.select(this.t);      }     catch(e) {         alert( e + ":" + e.line );     } } createThumbnails.prototype.run = function() {     if(!this.canRun())     {         return false;     }     var bmd = new BitmapData(this.t.spec);     if(bmd instanceof BitmapData)     {         var expPath = "C:\\temp\\centraliser\\" + this.t.name + ".jpg";         bmd.exportTo(new File(expPath));         return true;     }     $.writeln("ERROR:: Cannot render thumb");     return false; } createThumbnails.prototype.canRun = function() {     if(BridgeTalk.appName == "bridge") { return true; }     $.writeln("ERROR:: Cannot render thumb");     $.writeln(this.requiredContext);     return false; } if(typeof(createThumbnails_unitTest)  == "undefined") {     createThumbnails().run(); }