I have been using the Repository module for over a year on a church website.  We upload the weekly audio recordings in MP3 format of the sermons.  Last week I decided to update DNN from 3.0 to 3.3.7 and since then the Repository module has stopped functioning.   I have tried upgrading the module to 3.01.13 but it still doesn't work.  Basically when I try to upload a new file, after filling out the upload form and hitting UPLOAD, I immediatly get the following error message:

The connection was reset
The connection to the server was reset while the page was loading.

Unfortunatly this error message is pretty useless as it doesn't even give me a clue as to what the problem may be.  Has anybody experienced this or have any idea what may be wrong?  Here is the Audio Recordings page on our website: http://odcc.org/AudioRecordings/tabid/84/Default.aspx

Mike, that's exactly what the problem was.  Thanks!  I am an idiot.  It's been over a year since the last time I modified DNN and I totally forgot that I had to change the upload size in web.config.  Thanks so much!

I suppose that in host settings, the .pdf file extension is not authorised. Check this setting (not in repository, in host setting - advanced setting, fle upload extension).

DV FX