Well...here is the problem I have with your statements. The two that work and popupmenu->system->My Computer->[...] are the same. They open a folder in your popup with all the files in it. So if the two work, the other should work just fine. Now popupmenu->filemanager is a direct call to $FileManager$ which you defined in your evars.rc upon install of omar's installer. As for your Keyboard Hotkeys, you would have had to have defined those by hand so I would check and see how you are calling them. And I have no idea what "Theme Shortcuts" are so you are on your own with those until you define what they are better.

As to what jugg was saying. If you installed an enhancement to the explorer file manager, or got some spyware/malware, installed your copy of explorer could be crashing. Some enhancements to the explorer file manager require that the explorer shell be running causing it to fail. My best guess as to what happened is that you got infected with some poorly written Malware or virus.