Hi--yes I have, you cannot use IE in most NING sites as it will crash and not work well. That's why in the troubleshooting area on each classroom I say to use either Mozilla Firefox or Google Chrome as your Internet browser...they are both free downloads from the web and both work perfectly with the classrooms. I've used Mozilla for 5 yrs and it just has so many less issues than IE. if you do that you will have no issues ok!
Roxy---all the online classes are bookmarked on the Main Page of this site if anyone loses it. The Beg Class is at www.cmcclass1.ning.com and if you've already signed into it thru your invite you just need to sign into the classroom with whatever email and password you set up ok. HTH---