MATLAB 2008b worked on Mac OS X Mavericks!

I do not know how it started to work, but by typing matlab in terminal or XQuartz on Mavericks, , MATLAB 2008b came up.

Still MATLAB 2008b Activation did not work, presumably due to difference in Java version.

It may be possible that MATLAB 2012b installation and activation on the same machine caused MATLAB 2008b to work.

But the next day, license error came up.

The day after that, MATLAB 2008b came up again.

What's happening? Invoking MATLAB 2008b after rebooting the machine sometimes work...

These days, simply typing "matlab" in terminal works.