If your QT 4.3 is stuck syncing please add the following line into your config file
zmqpubnevm=
To access the file go to
Windows (Settings-Options)
Mac (Syscoin Core-Preferences)
And Open Configuration file
Save this and close and open QT
If you are still stuck after adding that line you will need a reindex, Open configuration file again and add
reindex=1
Save this change and close and open QT again this will rebuild your data (will take some time).
Once completed REMOVE ‘reindex=1’ from the config otherwise it will reindex each time you open QT.