Check the EQ2 main forums. I'll take a look myself becuase I have seen similar issues listed in the Technical Support Forums. I know there is a proceedure to do basically delete everything except the EQ2 exe file and maybe a couple of others and the downloader will repopulate everything (very long download), but I don't have the details.
Prior to doing that, try a full scan in the download options if you haven't already.
Also do post this on the EQ2 Technical Support Forums. You'll probably have quite a few responses within a day from people who know more than me.