I'm getting the following error on the Mac version of the latest update (1.4.8 not 1.4.7): "An error occurred, the server has quit. Please restart the application."
(Also, and unrelated, I tried to create a next forum account but the human verification test doesn't seem to work properly. I tried a few different things and it always rejects the code.)
The reason is you are Downgrading from 1.4.8 to 1.4.7.
The blockchain database has been updated to 1.4.8, and that's why you seems to be getting issues.
Things you need to do:
1. Open the Finder
2. Go to the Menu Bar and open the "Go" menu.
3. Select the entry: "Go to Folder..."
4. Enter the path of the Application Support folder:
5. ~/Library/Application Support
Tip: You can display the Library folder if you press the ALT-Key while in the "Go" menu.
* You'll need to delete the existing blockchain database from: ~/Library/Application Support/NXT Wallet
- File names will be something like h2, db etc. There'll be 2 files there. 1 of them would be around 1.22 GB. Delete both.
* Download latest blockchain databse from peerexplorer.com
- Go to bottom of the page, and there'll find the link to download latest blockchain database backup.
- Once downloaded, extract the database, and move the files to ~/Library/Application Support/NXT Wallet
* Latest NXT version is 1.4.17, so you should update your NXT to latest release.
- Download latest package:
https://bitbucket.org/JeanLucPicard/nxt/downloads/nxt-client-1.4.17.zip - Extract the archive and you'll get a folder 'nxt'.
- Go to /Applications in Finder
- Right click on NXT Wallet Application, and select 'Show Package Contents'.
- Go to Resources and look for 'nxt' folder there in directories.
- Wherever you find 'nxt' folder there, replace it with the one you extracted from the new archive.
Now start the NXT Wallet, and you should be good to go.
Hope these instructions might help.
Cheers