Ready Api 1.3.1 becomes un responsive to Mac OS X 10.10.3 Yosemite.

I am using MAC OS X Yosemite and upgraded my soap ui pro to Ready API 1.3.1

the tool is hangs a lot many times and had to force quit it.

mOST OF THE times tool will become unresponsive.

Please take a note and advise.

Regards,

Suraj