I'm trying to run an application setup by double-clicking the setup.exe from within Windows Explorer. The file is located on a mapped network drive, and I'm using Windows 7. This results in the following error message:

The specified path does not exist. Check the path, and then try again.

The workaround I found is to copy the installer to the main hard drive (c:) and run it from there; however, this is rather inconvenient. The same action did work on Windows 2000, Windows XP and Windows Vista. I have the impression that the problem only occurs with installers, as everything seemed to work fine with regular exe's.

Is there anyone who can explain this odd behavior?

Update: After some extended tests I noticed that the problem only occurs with a mapped drive of VirtualBox's "shared folders" (cf. vboxsvr). Mapping an SMB drive works fine.