Peachtree for DOS – Sharing Violation

I have a client who is using Peachtree for DOS.

The executables and data files are run from a mapped drive on an NT server. The clients are Windows 98.

Suddenly, the clients have been receiving “Sharing Violation: Abort Retry Fail” messages when they start Peachtree and when they access different modules.

I know this isn’t a lot of information, but does anyone have any ideas as to what the problem might be or where to look?