This may not explicitly need its own new thread, but I'd like it to exist for anyone that may yet look for answers (may not even come up anymore).

Previously created thread describes an issue experienced when closing the game. A quick skim through the forums seemed to show many players were also suffering, with no known solution. Only ever happened when closing, and not an incredible inconvenience to close a couple extra error windows when closing.

But, as of patch 4.5, I'd like to report that I do not seem to be getting these errors any longer. No changes were made on my end between pre-patch, when I was still receiving the errors, and post-patch, when they seem to be absent.

Conclusion: Something finally got fixed/corrected in the game files or some such, and problem no longer persists.

Again, no true technical support is needed here (and no support was ever really able to resolve this, as, evidently, it wasn't client-side). I just wanted a record of this no longer being an issue. Hopefully everyone else experiencing this problem may also report that the errors have gone away.