Hey Richard, I believe it might have something to do with the password.  I went to Extract Expert 23 Student file and the same message popped up.  The password box popped up over the error message within a second and allowed me to put in the password for Expert 23 and I can access the files.  I tried Expert 22 file again and waited, but no password box popped up.  Sorry, to bother you on the weekend.  No rush of course, I was just going back through lessons and files.  Have a great weekend!

Hi Pete. I know corrupted files sometimes happen. They happen quite often with my large (over 100 MB, 30 minute) videos. However, I just downloaded this file and extracted it just fine. Worked fine for me the first time. Remember, you have to save the ZIP file, then EXTRACT the files to a folder with the password. Don't just try to open the files from inside the ZIP without first extracting them. There's a reason why I got rid of these passwords with all of my new courses. They're annoying. The problem is re-uploading all of my old classes will take a TON of time, so I'm getting to them as I can.

Hi Richard, I don't know what was so special about that Expert 22 student file, Windows extract version didn't want to extract it.  I've used Windows extract version on the previous student files with no problem. ?? Weird ??  Anyway, I downloaded Win-RAR - opened with no problem and I'll be using for future files :) Thank you for getting back with me.

That's very strange. That file is 7 years old. Yours is the first complaint. I do recommend WinRAR, however. I also use it.