Thanks for everyone's response! The problem seems to have disappeared after I installed new Tutorial files. I discovered that my original installation of Alice was missing Tutorials Lesson 3 and 4. (Apparently, there may be some corrupt discs out there because I have several classmates who experienced the same problem.) A senior member of the Alice Community emailed me his explanation of the problem, as well as the missing files/folders. I'm not saying the tutorials were the cause of
this specific problem. But, after I deleted my original tutorial files and installed new ones, voila! Problem(s) solved! (
Thanks Zonedabone!)
The thread that includes the fix I used is listed below. It includes Zonedabone's explanation of the problem, a list of missing files and where they should be installed, plus two .zip files containing the missing tutorials. I didn't want to create possible version conflicts, in case there was an update that wasn't reflected when they printed the disc. So, I replace the entire problem folder rather than select specific files to cut and paste piece meal. It worked like a charm.
[Please note: there are two lesson files (3 and 4) missing in one folder, and the related worlds for those tutorials missing from another in problem Alice installations.]
Hope this info helps anyone else who may be having similar problems!
-Robert
Tutorials 3 and 4 Missing After "Complete" Installation:
http://www.alice.org/community/showthread.php?t=3828