Does not work in FF 22.0, neither in Chrome: 28.0.1500.71 or Opera. (OS: Linux Mint)

Ouch. Looks like some work for me ahead.

The problem with Chrome 28.0.1500.x (.95 here) is troubling me. It seems a more recent problem that I'm convinced is another browser bug.

Thanks for the detailed version report, that's really going to help. :-)

Hm. Works on Chrome 30.0.1582.0 (Canary) - after repeated page refreshes. Was stuck on 98% several times. Disabling the cache doesn't allow me to repro it, emptying the cache doesn't either.

Works with 28.0.1500.95, too.

However, looking at the console, I see occasional instances of Resource interpreted as <blah> but transferred as MIME type <foo>. Not a big deal, but maybe a pointer.

Works fine in Firefox, FWIW.

OMG, it works on IE 10! Congrats!

But not working on Chrome or FF :|

What version(s) are you on? I spent a lot of time checking in more recent versions of FF after developing the site.

I do pretty much everything on OS X these days, but I did fire up a couple of VMs with Win XP, Win 7, and Win 8 to test.

I did my entire dev on Chrome, and apart from what appears to be a new canvas issue at present, I'm not having any major issues. (I'm looking into the canvas problem.)