Symptoms
Registering an ATL server that has a long file name or one that resides in a directory with a long path name, returns a 0x80070002 error:
The system cannot find the file specified.
For DLLs, this error is returned by Regsvr32.exe. For EXEs, the call to Module::RegisterServer (CComModule::RegisterServer) in _tWinMain() returns this error.
Cause
ATL's registration code uses GetShortPathName() to retrieve the short name of the file and uses the short name for registration. GetShortPathName() fails if the file doesn't have a short file name. The default behavior in Windows NT, Windows 95, and Windows 98 is to automatically create short file names (8.3 format) for files with long names. You can turn this option off by using the "System Policy Editor" (Poledit.exe). Certain file systems also don't support creation of short names by default. ATL tries to use the invalid file name returned by GetShortPathName() in a call to LoadLibraryEx(), and fails with 0x80070002.
