Morgh's Tool run-time error '5'

[Corbul]

You know the one:

Invalid procedure call or argument

Yeah, so I've been having this error for some time now, when trying to edit the items and troops in mod_sys through Morgh's, but so far I've been ignoring it, editing everything manually. Now please, spare me the talk about how the manual approach is better, because I have a lot of items that I want to add, and then to give them to a lot of troops, so I need the tool to work.

As such, I was wondering if any of you's know how to fix this?

Thanks!