I found one single occurrence of this error message in our database. Investigation in R&D showed that it was due to a model corruption.
To fix the model, remove the design limit row that causes the failure and reinserting the limit.
I updated and published the related article now, so that it is visible in our database: CS131644
If you have the chance to verify, whether it helps in your case, too, please give me a feedback - it's always good to know whether a published article actually is of value.