using both, filemanager and upload.module

First, Filemanager doesn't stand alone, you also need the Attachment module:
http://drupal.org/project/attachment

Second, there are conflicts between Filemanager and Upload. You can't have both enabled in the same site. I suppose you could actually.... but be prepared for some work to get them to play nice together. They aren't designed to work together. Do a few searches and you can probably find some threads that detail the specific incompatibilities if you want to work around them.

And Third: why would you want to? The same basic functionality that both Filemanager/Attachment and Upload provide are the same, both allow you to attach files to a node. Each has features or functionality that the other doesn't provide, but the basic purpose is the same. The incompatibilities aside, it would be very confusing from a usability standpoint to have both enabled.

I hope that helps,
- Steve

i implemented some functionality with the upload.module and want to use some others with the filemanager.
I am searching for a way to restrict file downloads to usergroups and in number without having to set file permissions to private because imagecache is not working when the site is "on private"...