Error: Encountered an imporoper argumennt

[Ukemi72]

Good morning,

i am making a frame using Frame generator, which normally works perfect. But this morning had het error-message of "Encountered an improper argument". when changing a Frame Member.
Inventor is not completly blocked. I can hit the OK-button as much as i want but the is no action.
There is probably no other option the to close inventor.
does someone know how i can solve this error, but also how this error starts.

Thanks, Joop

[iamerm]

I'm using 2019 & getting the exact same error while using frame generator. It's also occurring as I'm changing a frame member. The error has "InventorVault" at the top of the dialog box. Unfortunately I don't have a solution.