I've created a new workflow, and started to add some existing tabs to build a hybrid GUI ribbon of MicroStation tools and custom tools. When I add the standard tabs from the the available list, it never saves the added tabs or randomly discards tabs I've added. Every time I open MicroStation it could be different. I haven't been able to add any new customized tools as I can't get the standard tabs to consistently open in any manner. I also can't seem to delete a workflow I created by mistake. It will not remove despite me deleting it several times. Any ideas how to resolve this? Can .dgnlibs become corrupt?