beta.curriki.org -->Clicking on Create a group button in the Create New Group page throws Error.

In beta.curriki.org, user ( curriki member or curriki admin) is not able to create a Group.

Clicking on Create a group button in the Create New Group page throws the following error:

Error number 4001 in 4: Error while parsing velocity page Groups.CreateNewGroup Wrapped Exception: Invocation of method 'createSpaceFromRequest' in class org.curriki.plugin.spacemanager.plugin.CurrikiSpaceManagerPluginApi threw exception com.xpn.xwiki.plugin.spacemanager.api.SpaceManagerException: Error number 3201 in 3: Error number 3201 in 3: Exception while saving document Group_sfsdf.ManageRoles Wrapped Exception: Error number 3211 in 3: Exception while saving archive 957,807,435 Wrapped Exception: exception getting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) getter of com.xpn.xwiki.doc.XWikiDocumentArchive.? Wrapped Exception: Error number 3211 in 3: Exception while saving archive 957,807,435 Wrapped Exception: exception getting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) getter of com.xpn.xwiki.doc.XWikiDocumentArchive.? @ Groups.CreateNewGroup15,24?