Httpmail plugin suddenly stopped working

I recently upgraded to a MacBook, downloaded the httpmail plugin from version tracker (forced Mail to open with Rosetta) and I was able to download email from my hotmail account without problem for about a week. Then, a few days ago, it suddenly stopped working. I did not change any of the settings. The onl y error message I get is "Server Error". Has anyone else had a similiar problem or have any advice?