On Mac OS X, I just installed LV 8.20, VISA 4.0.1 and NI-DAQmx Base 2.1.
After this process one of the installers changed the owner, group and permissions of /Library/Frameworks. This creates a potential security problem. Repair permissions will fix this, but it is wrong for the installer to do this. The permissions were correct just before I did the installation. I am not sure which of the installers did this, but I will post later as I figure this out.
User differs on ./Library/Frameworks, should be 0, owner is 501
Group differs on ./Library/Frameworks, should be 80, group is 501
Permissions differ on ./Library/Frameworks, should be drwxrwxr-x , they are drwxr-xr-x
Owner and group corrected on ./Library/Frameworks
Permissions corrected on ./Library/Frameworks