The ZR-1 screen saver suffers the same problem as many non Microsoft programs. Occasionally it will crash and message stating that WINDOWS is unable to open the program.

The following seems to fix it under WINDOWS ME and 98.

In windows/system/ find the file ZR-1 Screen Saver.smf Right click on the file and select "OPEN WITH...." Using the "OTHER" button select ZR-1Screen Saver.scr