This is why you don't rely on some random person's Github for updates, and why you should have just made your own Muledump.
I don't understand what is preventing you from changing it so it's configured to accept the new HELLO packet, but as you seem incapable of that, you're kind of screwed.
You guys shouldn't be so dependent on some anonymous person on the internet. 'Tis why I made my own Muledump when Atomizer's came out - I liked the idea, but I trusted myself more than some faceless programmer. It's more than just this issue - it's that I don't want to have to audit the code whenever there's a new version.
The best part is, I saved the time it took to make the multi-account part, 'cuz I don't use/support mules.
I might release mine, but I think this is teaching everyone a good lesson. Besides, someone would reconfigure it so it accepted multiple accounts, and then the damn database would be all clogged up again...