Newbie question....

I'm sorry but I'm having the same issue and drawing a blank on my physical path. I looked in actual mainfile.php as suggested to grab my path:
/usr/local/4admin/apache/vhosts/cmcda.net/httpdocs/xoops/htdocs.

Read/Write permissions are set for the repository folder to full read/write. Should I create a different folder off the root to place documents into?

Here is what my error looks like.

Error: Unable to move file.
SP:/tmp/phpQRRmGy
DP:/usr/local/4admin/apache/vhosts/cmcda.net/httpdocs/xoops/htdocs/modules/dms/repository/3/1/1/100001.dat

I also tried a virtual path but can't get it to move a file.

Your help is greatly appreciated.