ERROR: Error: Error calling method on

I recieved my unit today and tried to put stuff in it and overwritten data in the united kindom and republic of ireland folder and now it just loads to the start up and freezes :( i may of messed with the camera data as well i may of deleted important files if i had another device maybe i could look through it all but i havent :(

below is the report tom tom home is giving me when i try to operate my one

ERROR: Error: Error calling method on NPObject! in chrome://tthome/content/ui/subtask/emulator/emulatorPage.js:213
Stack:
0. function startup_navigator("Y45467I01854","7-163-8493-3.dll","23","Latin-1","E:") unknown
1. function () chrome://tthome/content/ui/subtask/emulator/emulatorPage.js:213
dataFolder);
2. function ([object XML]) chrome://tthome/content/ui/subtask/emulator/emulatorPage.js:129
this.initEmulator();
3. function ([object XML]) chrome://tthome/content/logic/util.js:81
return func.apply(obj, arguments);
4. function () chrome://tthome/content/logic/comm.js:435
this.successCallback(this.resultXML);
5. function (true) chrome://tthome/content/logic/comm.js:423
this._doneCallbacks();
6. function ([object ProgressEvent]) chrome://tthome/content/logic/comm.js:274
this.request.onload = function() { me._done(true); }

Time: Wed, 03 Jun 2009 22:00:05 GMT