I'm sorry to hear that you're experiencing difficulties with GameGuru Classic. It can be frustrating when software doesn't work as expected.
There are a few things you could try to troubleshoot the issue:
Make sure your graphics drivers are up to date. You can typically find the latest drivers for your graphics card on the manufacturer's website.
Check that your system meets the minimum requirements for running GameGuru Classic. You can usually find these on the software's website or in the documentation.
Try running the software in compatibility mode. Right-click on the GameGuru Classic shortcut and select "Properties." Then, click on the "Compatibility" tab and check the box that says "Run this program in compatibility mode for:" and select an earlier version of Windows from the drop-down menu.
If none of the above solutions work, you could try contacting the software's support team for further assistance. They may be able to provide more specific guidance based on your system's configuration and the error message you're seeing.