Solved! Go to Solution.
These older versions seem to be giving me problems with the front pannel on older VIs when I use the 8.6.
What kind of problems? If you have problems opening old VIs in 8.6, you might want to keep using the old version until the issue is identified and solved.
(Once you are happy with 8.6, you can uninstall the old versions but it does not hurt to keep them around. For example if you have a very old VI, you might not be able to open it directly in 8.6)