I also tried to fetch/recompile the "latest" (which is not really new) version of arcticcoin from scratch and tried that version (GIT Tag v0.12.0.63). But the problem is still there!
I also tried to delete everything except wallet.dat to force a fresh resync from scratch. After that was done the wallet again asked for a restart for some reason trying to start masternode. After that again the wallet/node hangs with mnsync status "GOLDMINENODE_SYNC_SPORKS" and there seems to be no progress keeping it run for a while.
Debug.log contains a bunch of this messages:
2018-08-07 09:30:09 CGoldminenodeSync::ProcessTick -- nTick 4093 nRequestedGoldminenodeAssets 1 nRequestedGoldminenodeAttempt 0 nSyncProgress 0.000000
Any suggestions? Help please