Shape Key Transfer Error

[John Smyth]

Hello, I was transferring shape key drivers between my main Genesis 8.1 figure and supplemental parts (such as custom clothing mesh, custom lashes etc) and now I am suddenly getting this error when I try to transfer shape keys again, to any mesh (which previously worked before). Please if you could tell me what I am doing wrong I would appreciate it greatly. Thank you.

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[Diana Prince]

Did you ever figure this one out? I started getting this error now myself.

[Diana Prince]

After reinstalling blender and the addon I think I figured it out for anyone having this issue. What did it for me is unhiding any hidden mesh in edit mode. Prior to finding out that transfer shape keys isn't working for me anymore, I did some editing on lips and hid teeth/mouth in edit mode. Even tho hidden mesh appears when switching back to object mode it seems to cause this issue.

[Thomas Larsson]

After reading Diana’s comment about hiding vertices I managed to trigger this bug. Fixed in last commit.

[John Smyth]

Ah! I’m glad it was able to be reproduced and fixed. I was doing the shape key transfer process repeatedly on the same mesh parts and ended up just starting a fresh file -- it’s very good to know it was caused by having hidden verticies + will be fixed now. Thank you so much!