After I reactivated the Wiki I noticed there is a problem with PDF files that I stored on the Wiki. They don't display correctly. I think you can download to your computer. Before I contact the Help folks I'll need to refresh my memory about how files are uploaded and stored on the Wiki. I wonder if the problem has anything to do with the fact that my account was inactive for a while since they stopped offering the "free" space. I'm making no promises about how soon I'll deal with and resolve the problem. I apologize for any inconvenience.