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You need to access your group permissions and each group you have. Don't change anything in the settings but be sure to click submit. Do the same with all the group permissions.
Then go to your modules admin page and update the system module.
The problem is without the system icon you can't access your groups pages or modules pages, right?
So login to your site and enter this in your browser address bar.
http://www.yoursite.com/modules/system/admin.php?fct=groupsThen go to the webmasters group and make sure that you have system admin rights, if necessary, by putting a checkmark in ALL the boxes in that section.
In laterst XOOPS versions this happens by default by clicking "update" in the webmasters group--without manually entereing checkmarks in the system admin boxes.
However, some older XOOPS versions do not default to adding checkmarks to the "System Admin" rights in the webmasters group.
If in doubt, check and confirm you the webmaster have all priviledges.