There is no visual notification that game has been saved (it doesn't for me), I always withhold rating a game until the bugs are ironed out. But personally, I won't spend any more hours on this one until I can be sure it saves.
Suggested fix for save issues, export function in the options menu. Many idlers have the option, I'm no dev... but I assume it's fairly easy since so many use it.
I spoke too soon... back to the error after it gets to the Unity splash screen "an exception has occured"... they even spell "occurred" incorrectly :) . This time it completely froze Firefox (updated FF, Flash, Java and Unity) with the stop script error "A script on this page may be busy, or it may have stopped responding. You can stop the script now, open the script in the debugger, or let the script continue.
Script: http://tpc.googlesyndication.c…&p=http%3A//www.kongregate.com:0"
I was also getting the error "An exception has occured, but exception handling has been disabled in this build."
I updated Unity and Firefox (did NOT clear cache)... it reset everything back to 1X, I'd made it pretty far too!!!