Failed to load img/system/Baloon.png
Missing files means you are using the wrong update. Updates are from the previous version to the next version (no skipping, they are not cumulative updates).
Your best bet is probably to download the current version. Don't worry about your saved game, it is NOT stored in the game folder, it is stored somewhere else. If you don't want to do that, you can track down the updates one at a time for each version that follows the last working version you had until you get to the latest version.
Which version are you on and which update did you download?