OK, deleted peers.dat and restarted the wallet but same result as before: still stuck at block 458314 and not synching - after about 15 or 20 minutes the wallet stopped connecting to the network.
What can I do next to get the wallet synching?
Thanks.
You could do a full resynch which will work.
-Go to appdata/roaming and back up your wallet.dat & Bitstar.conf file (if you have a conf file) delete everything else.
-Download bootstrap here - http://www.bitstarcoin.com/bootstrap.dat
-Drag and drop bootstrap.dat into your appdata/roaming/Bitstar folder
-Launch wallet - expect about 4 hours to synch
-After synch your bootstrap.dat will be renamed as bootstrap.dat.old which you can safely delete to get back drive space.