@Julie5FDF Alas, not that I know of. But if you can re-distill your way past the problem, you’re pretty much defining where the problem truly is.
I don’t know how helpful the folks at Esko will be about this, since they’re not your vendor but your client’s, but you can try and contact them and see what they can do to help you. Otherwise, at this stage of the game I’m afraid you’re either going to have to suck it up and apply your fixes or work out some other accommodation between you and your client(s) to sidestep the complication.
Is this happening with every file you get from that client using this color build in particular? Or is that the random one that popped up in this particular file? Do other spot builds blow up, or is it only this particular one, with, say, this particular company logo? If you can isolate it to specific pieces of client art, you may be able to fix it with better versions of particular graphic file(s). Hopefully you can turn that into a billable.
If not, I’m afraid I’d have to defer and lay this problem down at Esko’s corporate feet.
Wish I had better news for you,
Randy