Can you be more specific? Did the save functionality not work? Did the game crash at a high level? Did you have tons of level seeds saved?
Okay, I'll make you a new save file, I do want to inspect the old one to see what went wrong. The only thing I can think of is that you had to many seeds or maybe it was an issue related to saving in the specific browser you have.
1. How far along were you in terms of upgrades?
2. Which doors did you have open in the main area?
3. What Browser are you using?