VuMark-Verify throws error when dark elements and bright elements are 56

Hello,

so I was trying to create a custom VuMark. Everything worked fine up until now. I am adding dark and bright elements to the corresponding layers, but when I try to VuMark-Verify afterwards, I get:

Error 21: undefined ist kein Objekt

Line: 742

-->

What's weird is that this error only appears when the number 56 is reached for both the dark and the bright elements (56 is the number of the required elements).  Before that, when I verify, it just tells me that there is still an element missing.

I would appreciate any help and thanks in advance.