Suddenly when I start running the windows phone7 emulator it started giving me the following error, that I have showed below in the screenshot. It worked properly previousely and also didn't change any of the settings. I am using VisualStudio Express 2010 version that introduced for phone development(The IDE). I re-started the machine and checked again, but not yet any difference. Have anyone previousely experinced the same issue.
Thanks...
Somebody else had the same Problem ;) You have to delete the File. It is also explained in this Thread Error launching emulator of the windows phone 7 Mango RC