How do I get the 4.0 wallet to retry importing my 3.0 wallet? It crashed the first time.
Delete your data folder and start wallet again.
Crashed again the same way.
Here's the end of the debug.log file:
2017-04-03 02:23:50 UpdateTip: new best=cd5820a22f5d7541b3aa94cc6331630f60f78c1beb43aa6dacd7b1ad91ed8cd2 height=597597 version=0x00000007 log2_work=70.460759 tx=1245117 date='2016-12-08 07:59:28' progress=0.605753 cache=261.0MiB(1198705tx)
2017-04-03 02:23:50 UpdateTip: new best=847f642b862cd7f52a87b4cc05b5e922f2c9972ad77abdc5249e4389da4b66b0 height=597598 version=0x00000007 log2_work=70.460763 tx=1245119 date='2016-12-08 07:59:44' progress=0.605754 cache=261.0MiB(1198707tx)
2017-04-03 02:23:50 UpdateTip: new best=4a1bb85b9146237426104c879aa870ed0fd041ee7f0e05d8036f9dfa7bc79575 height=597599 version=0x00000007 log2_work=70.460766 tx=1245121 date='2016-12-08 08:00:16' progress=0.605755 cache=261.0MiB(1198709tx)
2017-04-03 02:23:50 UpdateTip: new best=57e75833c30cd969b3b31547298c4349ca68c26430101db4986b964d4221a764 height=597600 version=0x00000007 log2_work=70.460769 tx=1245124 date='2016-12-08 08:00:32' progress=0.605756 cache=261.0MiB(1198712tx)
2017-04-03 02:24:03 *** System error while flushing: CDB: Error -30974, can't open database
2017-04-03 02:24:10 ERROR: ProcessNewBlock: ActivateBestChain failed
2017-04-03 02:24:10 tor: Thread interrupt
2017-04-03 02:24:10 torcontrol thread exit
2017-04-03 02:24:10 scheduler thread interrupt
2017-04-03 02:24:10 addcon thread interrupt
2017-04-03 02:24:10 opencon thread interrupt
2017-04-03 02:24:10 msghand thread interrupt
2017-04-03 02:24:10 NavCoinStaker terminated
2017-04-03 02:24:10 keypool return 6
2017-04-03 02:24:10 net thread interrupt
2017-04-03 02:24:10 Shutdown: In progress...
2017-04-03 02:24:10 StopNode()
2017-04-03 02:24:10 *** System error while flushing: CDB: Error -30974, can't open database
2017-04-03 02:24:12 CDBEnv::EnvShutdown: Error -30974 shutting down database environment: DB_RUNRECOVERY: Fatal error, run database recovery
2017-04-03 02:24:12 Shutdown: done