Can't add Pierce suppport gem to sparks as Sorceress

Whenever I try to add the Pierce support to sparks, it refunds me my gem and then I get an "Operation could not be completed" error if I try to do it again. The gem still works if put it on a different spell with a different property.

So, I got the same with conduction. It showed i could have it but got operation could not been completed. I think the bug is that I don't have enough dexterity to do it, i moved about a bit and the skill gem went grey and said i didn't have enough dex.

Figured it out. Deleted