thanks for your help, it's fixed now!!

Hi,
There are some errors after I installed the joomsef and this prevented me from accessing my admin panel. I have to delete the com_sef folder via FTP so that I can log in again.
But I saw that there are still some protected extensions in Extension Manager, which makes my images URL rewrite, leading to the loading error: you can find this:
www.mmofe.com/news/item/201-a-high-quali...ill-be-released-soon
So how could I uninstall rest plugin and delete the database of your plugins, as I couldn’t uninstall it in Extension Manager now.