Hello, I worked on a GUI for cryptonote wallets back in 2014, but couldn't finish it and then my laptop was stolen and I lost all of the code (and plenty of crypto in the process). My focus was on making a Windows/Mac GUI for MonetaVerde using a PHP layer (self-contained). Soon after that I was very sick, and then I lost interest in trading/developing because of my major loss.
Back then, I was in personal communication with CryptoMidnight (original developer), when they decided to leave the scene to continue their studies they handed-off account access to me. The only thing I know that works right now is the Twitter login.
David, if you'd like access to the account information I have, it's all yours. The only thing I ask is that you make a good attempt to get the codebase updated with active seeds and send that information to Poloniex. The exchange has closed the trading, but I still see whatever coins I have left on their exchange with a status of "temporarily disabled", so I think if they can at least update the code and sync it up for me to withdrawal. This would also mean having a Windows wallet available. I wouldn't advise going down the path of a PHP wallet such as I have tried, maybe take a look at what other cryptonote coins are doing nowadays, you may just be able to merge in those changes to get things moving.
Let me know if you're interested in getting the information handed to me from CryptoMidnight (does this forum allow direct messaging, or I can just provide my e-mail address).
I do hope you get this coin starting again, not just because I have some locked up coins in polo, but because it is truly a unique coin with the way the block reward adjusts to the difficulty. Extra plus, merged mining, which make it "green"!