Jann180: The effect should work indefinitely. Are you sure the items aren't simply broken?
Easy way to test it is (make sure you don't have spells like fly or water walk active) - click rest and keep resting for 5 minutes - each time you do that you should see hp/mp go up a little (well, or wait for an hour and it will go a lot more).
If it really is a bug, I don't really have an idea what caused it or how to fix it. Are you running the game with admin rights (or does the game ask for them when you run it)? I heard that running the game without the rights can cause all sorts of weird glitches.
Hi. Thank you for your feedback. I checked my file properties on MM6.exe and the run program as an administrator box is checked. These items were not broken because they were not colored red on the inventory screen after I unequipped them. Also when I tried to rest in 5 minute and 1 hour increments, the MP bar did not increase. Very strange. It looks like I may have to start over because no enchanted items seem to work.
ZFR: You could post a save game here and I could see whether it runs properly on my machine or not.
Thanks for your help. Here is my saved game file called save000.jpg. I couldn't upload the file until I changed it to an image format. Just change the file extension back to save000.mm6. Thanks again.