I downloaded v7.70 this morning and went to edit the 3rd party editor and found all of the 3rd party controls deselected in one of my projects. Tried to add them back and got an error when pressing the “<<" button. I have duplicated the same thing in a simple project (attached). Also attached a screenshot of the error listing.
Not sure if this problem existed in v7.69 or earlier. I will check into it when I can and report back.
Thanks.