something has gone FUBAR with your right click context menu
I can tell you the next steps I would take to correct this problem on my box.
1. Uninstall Slimbrowser 7.xx and restart and install the last Slimbrowser 6.xx and restart
do it again this time come forward again to the latest 7.xx
2. Download and Install Revo Uninstaller 1.94
and then uninstall Slimbrowser with it instead of the native windows add remove. After the uninstall install whichever version of Slimbrowser you wish. Keep doing the annoying restarts in between actions too.
3. Download and install FileMenu-Tools
and use the program to clean up the right click context menu entries. Before using this program I would uninstall Slimbrowser and after a restart look to see if there are any entries remaining associated with Slimbrowser and remove them completely with the FileMenu Tool. After a restart install 7.xx and try it out
4. If the File Menu Tools is not to your liking check out the other ones available which are reviewed on this webpage clean-right-click-menu