I had a problem with getting my wallet to sync, it was caused by my firewall blocking the network connection. (because of malware placing mining software on peoples computer)
I had to go into the firewall to manually enable the wallet, and it synced right up.
That is a common problem with many cryptocurrency coins, NOT just Guncoin.
Correct.. The firewall blocked several of my wallets, as well as my Nvidia video driver updater and a bunch of other stuff.