Unable to reserve a package name
When I try to reserve a package name through NWDS I receive this error pop up:
Invalid name; on this server no names of category SAP_DesignTimePackage
are allowed at all
Your tried to reserve the name: comp.mycomp.financial
Allowed Prefixes for Packages: 
If I go to the Name reservation at the SLD and manually reserve this name I able to reserve it but then I ger a warning at the NWDS that this package is (of course) already reserved. I have removed it from the SLD in order to free this name but again, if I try to reserve this name from NWDS I get the error message above.
If I am standing on the package properties I see this:
Name Reservation Status Invalid Name: Packages should begin with  (I assume that inside were supposed to be valid prefixes).
Any idea why I get this error from NWDS?