Just would like to say that I’ve probably spent the last three hours working on a similar problem, checking all the directories/files to be 777 etc etc / trying to get the right path(s) searching various threads etc etc - had the file manager working to some degree, in that I could upload a file to it, but could not add a new directory getting access denied etc
The Editor would not let me view any files that I had uploaded to assets/images and would not let me upload any getting the "Failed to upload file, internal error message" every time.
So it was only when I found this thread did I finally get things working - using MODx 1.0.2
Under Tools/Config/File Manager:
File Manager Path /home/wwwanoth/public_html/assets/
Then under Tools/Config/Interface & Features:
File base path /home/wwwanoth/public_html/assets/
File Browser URL
http://www.anotherharddayattheoffice.co.uk/assets/
And it all now works !!!
Now on to the next issue!