AceSEF 1.5 Upgrade problems - Forums Task Topic P 2 Id 7076

Im still having a lot of problems with the 1.5 upgrade. I did just upgrade to the most recent version from the AceSEF upgrade panel. I can now view and edit the configuration ( I did have the Class 'AcesefSitemap' not found when I first upgraded)

However, I cannot edit any sef urls. When I try to edit them, there are no buttons or any css formatting in the modal popup, and there are no save/apply buttons in the edit screen anywhere if I dont use the modal popup ( ie: select a sef url, go back to the top of the screen and click edit ).  Saving or applying does not work. I see this message at the bottom of the screen:

Fatal error: Class 'AcesefSitemap' not found in /yadda/yadda/yadda/administrator/components/com_acesef/views/sefurls/tmpl/default_edit.php on line 285

Yup, that's correct. I also upgraded again and things are working fine!