Wrong permissions in Remote Desktop

Hi there,

i adjusted the permissons for the Remote Dektop Admin to the full range but there seems to be a problem with one client. If i try e.g. to copy a file to this client i get the message, that i do not have the permission to do this (but i checked all permissions on that client in the system prefs!). Is there a way to reinstall Remote Desktop and Client or to delete and preferences?

I already tried this:

But it didn't work, same problems appeared after i downloaded Remote Dektop from Apple Store...

Any idea?

Uninstall or disable Apple Remote Desktop

Best, ixtract