"Server Error 0 Occurred" with BlogEngine.NET and Windows Live Writer

Besides the many symptoms that can cause Server Error 0; another likely one occurs when you use semicolons instead of commas to separate your category names. This causes the category to be read as one giant category, forcing a truncation at the server level.  There is an easy fix. Copy the category names into notepad, hit CTRL+H to do a Replace, and change the semicolons to commas.