The message was generating a list of settings that had an error state by going through all extruder stacks and the global stack, but didn't bother to check the per-object stacks. I could've added it to the regular message but then the user would be confused because he can't find any errors either. So instead I opted to specify that it happened in per-model settings. It's not perfect, but should narrow down the user's search considerably.
Fixes#2427.
6d2bcd9b3e