I am running a modded version of Minecraft on my computer, which is a Mac Mini running OSX. I have the latest update of Java 7 and I am running the FTB Unleashed v1.1.3 launcher and have not had issues in the past. I have reset both the launcher and the machine a few times and have had no success so far.
Here is a screenshot of my launcher:
Any help or advice would be very much appreciated.