I have noticed something with reporting bugs and problems that are encountered...
If the user is allowed to delete the Z: share to / once this is done things start acting strange or not working. Many people have done this for various reasons.
My suggestion is to do the following:
1. If we have a base configuration that should not change for settings IE the Z: mapping then do not allow this to be changed or deleted in winecfg. If someone is dumb enough to go into the ini file and delete it then they should know better.
2. If it is critical that the Z: or drive mapping be there for / then if its missing should wine then handle this condition?
Chris