How to get installers not to hang on "Waiting for other installations to complete..."?
"fPermittedFrontASNs" points to the new Gatekeeper Function Apple introduced in 10.8 and which changes the way background processes behave and are able to launch child processes that interact with the user interface.

The Gatekeeper-Rule "Allow Applications downloaded from: Anywhere" still has some restrictions, as an example at this Apple Support Page points out:


  "Anywhere – Allow applications to run regardless of their source on
  the Internet; Gatekeeper is effectively turned off. Note: Developer
  ID-signed apps that have been inappropriately altered will not open,
  even with this option selected."


I don't know if that specific note applies to Hotspot Shield, but i have seen similar Problems with other VPN-related Software.

I suggest you deactivate Gatekeeper completely for the Installation of HotSpot Shield. You can do that in the Terminal with:


  sudo spctl --master-disable


After that a restart might be necessary. You can activate Gatekeeper after the Installation with:


  sudo spctl --master-enable


For more Options look at 'man spctl' in the Terminal. Please tell if that solved your problem.