I am trying to get the Dialog Extension to work, as dialog trees are pretty essential to my game. Unfortunately, I seem to be unable to use any extensions at all. I have installed them correctly, as far as I can tell: for the dialog extension, the .jar files are in the engine-extensions folder along with the "Dialog" folder that has all the code. I can go to the Extensions Manager under Game Settings and activate the extensions, but even after I close and restart the game, no extensions appear at all on the left-hand side of my game Dashboard. The "Extensions" heading is there, but it is empty and there is no dropdown.
Also, I imported the sample game for the dialog extension, and when I try to test it, I get an error message. The logs for that error are attached. I do not think the problem is with the Dialog Extension itself because no extensions, not even the build-ins, are working--they all have the same problem where I activate them, but then don't get access to them in the game.
I am using 3.4 (Beta 2) of Stencyl on a Mac with OS 10.10. Please help!