Possible Duplicate:
Codesign error: Provisioning profile cannot be found after deleting expired profile
I am new to iPhone developement, i im developing an IOS application in my iPhone, i test in device. but when i download an application from internet and i would like to test it in my iPhone, there is an error like this : [BEROR]Code Sign error: a valid provisioning profile matching the application's Identifier 'com.yourcompany.WhereIsMyPhone' could not be found
how i can do to test, the application of other programmers in my iPhone
thanks for your answers