Best way to fix this problem is to download ShellExView from nirsoft(free). After you start it up click on Type (in header) this will sort items into categories. Disable(right click) everything in Type/Context Menu only. Right click problem should be solved, now go down list in ShellExView and enable each extension one by one checking for right click problems after each enabling. Just fixed this problem myself(Eraser 5.7 shell extension disabled). Everything back to normal!