To Windows users who are trying to update the wallet clientAfter you download the updated wallet - but BEFORE you install it:
1. Go to C:\Users\YourUsername\AppData\Roaming\Guerillacoin
2. Right click on your wallet.dat file and select COPY
3. Go to your desktop and CTRL-V to paste it
4. VERIFY that you see the wallet.dat file on your desktop
5. Delete C:\Users\YourUsername\AppData\Roaming\Guerillacoin
6. Delete whatever folder you have the wallet installed in (C:\ProgramFiles\Guerillacoin ?)
7. Install the updated wallet
8. Run the wallet client
9. You may get an error that says something about a corrupted database. It will ask you if you want to re-build the blockchain or some such thing. Click OK
10. The client will launch and start to sync
11. After the client syncs, close it out
12. Copy your wallet.dat backup BACK into the C:\Users\YourUsername\AppData\Roaming\Guerillacoin folder, overwriting the one that is there
13. Run the wallet client again to make sure your coins are there
That's it
Always - ALWAYS - back up your wallet.dat before making any changes to the client.
Following those steps should solve your syncing problem.