While users try to login, we started to get error the following error:

Failed to create UserContext object "username:profilename" Premature end of file

anyone faced the same problem??

Thanks so much..

You did not specify if you are using Webtop on Tomcat or other webserver.
Check the owner, group permissions on 'usercontexts' directory.

[WebSrv:bsp]/opt/web/tomcat/appserver/webapps/webtop/config>ll
total 804
-rwxrwxr-- 1 tomcat tomcat 27 Oct 23 15:13 smartlink.properties
drwxrwxr-x 11 tomcat tomcat 4096 Dec 11 14:37 usercontexts
-rwxrwxr-x 1 tomcat tomcat 799035 Dec 14 21:48 webtop.log
-rwxrwxr-x 1 tomcat tomcat 351 Oct 14 18:38 webtoplog.properties
-rwxrwxr-x 1 tomcat tomcat 1732 Dec 11 13:50 WebtopProperties.xml
[WebSrv:bsp]/opt/web/tomcat/appserver/webapps/webtop/config>

Also check in the Webtop Admin console if the user has permissions to create/alter profiles.

We are using tomcat
I checked the usercontexts directory, and created new profiles for the users.
We don't anymore get error.
Thanks.