Hi there,
I'm not sure exactly how well documented this issue is but I haven't seen it mentioned too often other than here:
http://hutonggames.com/playmakerforum/index.php?topic=8895.0Our team is going through some issues with Get Property, essentially the action fails when trying to reference too many high memory properties.

In order to reproduce the problem in a new project I had to greatly increase the amount of properties being referenced, it seems to have a direct relation to the memory footprint of both the script and the project. I can also say that it happens exclusively on PC and not on Mac.
Here is a link to download a project, to cause the error simply run Get Property off a testScript component in the attached project.
https://dl.dropboxusercontent.com/u/76373827/testProject.zip Any help or insight would be hugely appreciated, it's currently holding up our team.