javafx jar builds fine but doesn't open

Question

So i created a javafx project, it has 3 packages, application, controller, and an images package that holds all the images im using. The program runs fine if i just compile and run, no errors. However, when i create a jar from it, by selecting the build.fxbuild, everything goes smoothly and it tells me it is successful but when i try to double click the jar file nothing opens but java starts running in the background until i force close it. Im running OSX yosemite, and im on java 1.8 if that helps at all. I've tried making the jar through the export option but it doesnt run either and just says that it cant open the file. The weird thing is i made another javafx project just to see if it would work, same settings but just something simple, a window that pops up and says a line, then exported to a jar by clicking build.fxbuild and when i double click the jar it made it works perfectly.

I'm at a loss for what is preventing my other javafx project from working as a jar file and the other similar posts ive found on here haven't solved it either. Any ideas?