File paths generated by new filebrowser are not leading to the file

I am trying some of the nice changes implemented by dman for the new filebrowser module with drupal 4.7 (see http://drupal.org/node/72451). Unfortunately, every time I try to select a file with the new filebrowser, the file cannot be found and the following screen displays the number "2" instead. The log tells me the file cannot be found.

The file, however, is there and in the right place. The system, with filebrowser, however, doesn't see the file when accessing it through the path: http://www.mysite.com/~myname/?q=files/subdir/test.html

The filebrowser, until the moment of trying to open the above sample file, works fine. It shows that test.html is there and the filebrowser lets me browse the appropriate directories. Only when opening the file does the module have a problem. Any ideas? If someone can help, I would be most appreciative. Thanks in advance!