Thanks for the backtrack, gulikoza. The cast (localDrive*)Drives[drive];
is invalid (Drives[0x19] is the virtual Z: drive).
Maybe the casting can be checked if it is correct, or implementing the
function GetSystemFilename for the virtual drive (don't know if it would
work then though).

Rechecked the latest CVS (18.10.2007) including the fix, DOSBox reports MSCDEX Failed : Path invalid.

Bug Closed.

Erik.

Yes, should be working now, thanks for your report (and gulikoza for his dump 😀 ).