Forum:SH:Problem with editing a page

I was doing some general browsing, and I noticed that, on the pages for the SWTOR trailer films (Deceived, Hope, etc.) the entries for "preceded by" and "followed by" in the infobox didn't match up with the dates. So, I tried to fix the problem, but I hit a snag. The edit preview looked fine, but when I tried to save the edit, it was flagged as potentially malicious, something about mangled code, and mentioned something about a specific error code being "VisualEditor derpage," whatever that means, which I couldn't find anything about, either on Wookieepedia or Google. Does anyone have any suggestions?