Quote from: bmwcyclist on May 19, 2025, 04:40:28 PM
16mhz XLerator and Mac OS 7.1 compatible?
Yes.
Error -39 appears to be "end of file" suggesting something is corrupted, either on the disk if the behaviour is consistent, or a hardware communication problem with the disk if it isn't.
First suggestion would be replacing the control panel file with a fresh copy, and if that fails to solve the problem, experiment to see what else isn't working properly to help determine if you need to re-install the system or troubleshoot a hardware problem.