Unable to parse server response when uploading media

I am running EasyBlog version 3.9.15370 on Joomla 3.2.3. When I try to upload an MP3 from either the front or back-end, I get an error stating "unable to parse server." I tried disabling the cache with no change. We did have a problem this week with the site where system errors were being posted on the actual pages, and we disabled error messaging. Other than that no recent changes made. Worked fine just last week.

We have our backend admin locked down due to frequent brute force attacks. If you provide your source IP I will add it to the whitelist so you can access our back-end. Thanks!