Engineering workbench error

On 10.0.700.4 and trying to check in several revisions from the engineering workbench. Getting this error. Anyone know what is causing it?

My first guess is it is a customization error. Try opening with the base Form

Ha this is funny @jgiese.wci just went through this.
There is a bad record in one of your check out parts.

We couldn’t figure out what was bad about it, but undo checkout fixed it. Go through the parts in your group and try to check them in one at a time, you’ll find the bad one. (for @jgiese.wci it was the first one on the batch)

Yes there is a bad record, likely a material. We get this on 10.1.600.30.

I wonder if this is related to what happened to us. Our parts are all caps, engineers were manually typing in components in the engineering workbench in lower case… and they stayed lower. We got a case fix program from Epicor that fixed our issue. We now tell people to make sure they use caps if they manually type in parts.