Once in a while I get this error at the login screen. Clicking on OK and Cancel doesn't work...because it made my taskbar, which was Windows XP style, look like the Classic Style. (Well, kinda.) How to solve this? Svchost.exe - Application Error The instruction at "0x7c918fea" referenced memory at "0x00000010". The memory could not be "written". Click on OK to terminate the program. Click on Cancel to debug the program.