Adobe flash player installer screen blank.

Every time I try to install the latest Flash player the "Adobe Flash Player Installer" screen goes blank. I'm on mac by the way (Yosemite) "Getting installation" and the bar shows up for a split second and then dissapears. The rest of the screen is completely blank, no matter what I do. I have shut down browsers and all other relevant programs before attempting the install, so it's not that. Also, I have uninstalled flash to do a clean install, but it made no difference.

Please help me fix this problem. I have found no help for it.. I can't believe adobes installation software is bugged like this.