We are still investigating wallet issues, but on a fresh windows 7 64bit install it syncs fine with the bootstrap.dat listed on the main post so we are still trying to narrow it down.
We have also been listed on CoinMarketCap here: http://coinmarketcap.com/currencies/zirkcoin/I tried my wallet on Win7 x64 as well, but it crashed as it is crashing on Win 8.1... The problem is not with the new wallets, but with old ones (i.e. which have coins in it). I believe that we can help you fixing it tomorrow, but can't promise anything at the moment.
Delete wallet, download new wallet.
Keep the same /appdata folder.
It will work, your coins will be visible in the new wallet.