NLP 2.1.7 Beta - Un-Covert LR Issue

Hi there,

I have an issue with the function undo the convert or reset the picture.
I have installed the beta color management MXF files too.

LR say: ?:0: attempt to index global ‘defaultRawSettings’ (a nil value)

LR Classic 9.3 (Adobe CC)
MacOS 10.15.6

thanks