Macro error generating multispectral image

I receive the following error after I select standards for the vis photo but before I can select standards for the UV photo when generating a multispectral image:

Index (0) is outside the 0-1 range in line 762

roiManager (“select” , i<)>;

Interestingly, this error doesn’t pop up the second time I try to generate the same mspec…any reasons why this might be popping up the first time around?