Module launches, then goes black
I have a module set from our developer overseas. It's a primary module, with two sub-modules that launch at specific cues during the primary module ("Click here to launch the simulation"). The primary module plays fine. When the button is clicked to launch either of the two sub-modules, a new browser window opens (good), we see the first second of the sub-module (also good), and then the sub-module window goes black (not good at all) as we don't see nor hear the sub-module.
The difficulty is that it's playing fine for our developer. We've tried saving the published files to a desktop, to a local company server - each time we try it, we get the same "opens-then-black" experience. The developer says it's fine and functional since it plays on their servers and systems.
The developer is using Captivate 5 - - the same as they've used for previous modules, all of which launch and play perfectly for us.
At this point, we have no idea why this module is doing this. Any ideas?