I haven't tried it on a different computer, but I've had a few friends test it. Some apparently have no problems at all, others have issues with the window maximizing(even though the window command is given fixed parameters for the window size) and others have problems like my own. There are no COM calls or additional DLLs in use and it's the only script loaded at the moment.

The thing about the options window crashing is that it happens erratically and only when the script is in use or has been in use. If I don't bother with it then the options window works fine and nothing crashes.