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Problem

Schematics randomly disappear, become hidden behind other windows,
and/or cannot be printed or saved.

Cause
It seems the problem is triggered by having system screen resolution set
very high. If you have recently installed a new monitor (or moved to a system
with a larger monitor), the screen resolution probably increased (without
your knowledge) to accommodate the new monitor.

Solution
The actual screen resolution that causes the problem may differ from user to
user, or system to system,
you have may be different from mine, but if you are experiencing any
problems with your schematics, try lowering the resolution and see if
the problem goes away. [You may have to work down from your current
resolution to find one that works for you.]

If you don't know (or are not sure) how to change the screen
resolution, please refer to your Windows or Vista Help to ensure you
do it correctly.