You are attempting to perform an installation of IBM SPSS Statistics version 21 or 22 on Mac OS 10.8.4. After downloading the *.dmg file, you run the installer.app, but you get a blank window with only the OK button. So it is not possible to perform the installation.
This issue is caused by an Apple Java problem. For more information, please update "Java for OS X 2013-004." This update corrects an issue with Java applications failing to respond to user input.
Resolving the problem
Please note that IBM SPSS Statistics 21 and 22 needs Java 6 and maybe Apple Java 6 may no longer exists on your upgraded system.
You will need to Download and re-install Apple Java 6 (Apple Java 2014-001) from the following link:
After installing the update, please reboot your Mac and try to install IBM SPSS Statistics.