I am currently running XP. Yesterday, the "open with..." option in the right-click context menu ceased to function. I tried rebooting, thinking that it was just a temporary problem, but that didn't work. I used to have many programs in the list to choose from, but now there is not list at all - the sub menu just reads "open with," and selecting that does not bring up the expected dialog where I can select from a list of apps - and sometimes there isn't even a submenu. Also, it seems that some file associations have been lost. Please help!