during the last months we have seen two problems on XP systems that can be solved relatively easy:
1. LockUp when first starting Edit Room and mouse clicking anywhere. This may be due to incompatibilities of the sound driver with XP and can be solved by switching off *Play EASE Sounds* in the main window under Options/Settings.
2. LockUp or error messages after updating to XP SP2. These problems are due to incompatibilities of old display drivers with the OpenGL support of SP2. Either uninstalling XP SP2 or updating the display driver to the most current version will resolve the problem.