Try this:
1. Get a fresh copy of the latest version.
2. Extract the translation patch but don't paste it over the game files just yet.
3. In the game's folder go to www\data\system.json.
4. At the very end of system.json. there should be the encryption key, you need to copy the following 3 properties: hasEncryptedImages, hasEncryptedAudio, encryptionKey.
5. Go to the translation patch and open data\system.json.
6. Add a comma just after the last property and then paste in the 3 properties you copied to the end of the file just before the } and then save the file, should look something like:
"windowTone":[0,0,0,0],"hasEncryptedImages":true,"hasEncryptedAudio":true,"encryptionKey":"sdwe897weew9sfde7ds9ds98fw"}
7. Paste patch files over game files like normal.
Hopefully the game will load now.