cannot modify file system rights

[chris_im_foruml]

Hello,

Enviroment: iManager 2.7, Netware 6.5SP7

I cannot modify file system rights if I have assigned rights to many (more than 10-15) users to directories. If I have assigned rights to only a few users/groups everything works fine.
I select the directory and then I click Rights. After 30 sec (or more ...) I get an error message:
The system encountered an unknown error. Please contact Novell Support. and a Details button. Click on Details brings me a lot of tomcat errors (same as on the server console)

The first few lines are:

novell.jclient.JCException: licenseConnection -676 ERR_INVALID_CONN_HANDLE at novell.jclient.JCContext.licenseConnection(Native Method) at com.novell.plugins.FileManagerPropertyBookPages.sh ow(FileManagerPropertyBookPages.java:69) at com.novell.emframe.dev.PropertyBook.showPage(Prope rtyBook.java:1152) at com.novell.emframe.dev.PropertyBook.doShow(Propert yBook.java:882) at.......


It seems that the iManager has problems to modify or display such "long lists" With the C1 or NRM I have no problems to modify the properties.

Any ideas?

Chris