Issue when starting windows application in windows emulator

Question

I am trying to create a simple application with hello world in text box on button click in Microsoft visual studio 2010 Express for windows phone.

But when i try to debug it's showing "windows phone emulator has stopped working" and in console "connection failed because of invalid command-line arguments".

I am using windows 7 ultimate 32 bit.

Your help is appreciated.

Thanks in advance