That sounds so disappointing Cpryd001.
I guess I don't understand why they couldn't just play there games from there personal dropbox public folder's? All they would have had to do is open there exported html5 game file inside of there personal dropbox public folder's and double click on there index.html pages, and there games should have opened. Or just make a link to that file, and past it in the browsers address window.
The server bug you will have to talk to Ashley about.
I usually export my html5 games to my desktop first then I upload it to dropbox. Your right exporting it to dropbox directly from C2 might be why it crashed. Uploading to dropbox is just to slow for C2's exporter I think.
There artwork looks real good. I especially like the angry birds ones but maybe that's just because I like that game.
I'm not getting any sprite loading bug's. So if you need some help fixing there games just let me know what you need done, and I would be happy to help out.