Thanks for your help, the information I read in your links didn't fix my problems but led me down another road to consider.
As I mentioned earlier, on my hard drive I have a seperate partition for/home. The actual operating system, I normally install on a seperate partion under /. It makes it very easy and convenient to install a new operating system or upgrade without affecting my personal files. My thought was, because I had Ubuntu installed prior, that possible in the /home partion there were configuration files that were conflicting with the new install.
I think I guessed right, because I moved all my personal files to a flash drive, formatted both partitions (/ & /home) reinstalled Isadora and all is good! I put back my personal files to the /home partition.