Some applications, like Visual C++ v5.0, change the default debugger during installation. If the app is installed in a folder with a long file name or space in the folder name, the subject symptoms will happen.

You can either set Dr. Watson as the default debugger (see tip 241) or you can fix the problem. Edit:

HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\CurrentVersion \AeDebug Double-click on Debugger which is a type REG_SZ and set it to the full path to the debugger, followed by the parameters already present, enclosed in " marks. To fix Visual C++ v5.0, set it to:

"C:\Program Files\DevStudio\SharedIDE\Bin\Msdev.exe %ld -e %ld"