BTTray.exe is not a valid Win32 application??

[PrototypeEW]

I got my TP2 this morning and I installed WMWiFiRouter and TomTom Nav. 7 now when I turn the phone on I get the error 'BTTray.exe is not a valid Win32 application.' What could cause that and how can I fix it? How could I go back to like when I first opened it? This is my first WinMo device. Please be gentle.