Quote from: marecek666 on January 28, 2020, 08:04:37 AM

Really thanks devs for the new version of wallet. It is super to see that the development is going forward. But this new wallet is the worst I have ever seen for syncing. It was not able to start with datadir files synced from previous version (keep crashing). I deleted whole contents of datadir except my wallet.dat and let it sync from the scratch. But it is not able to do full sync. It is doing OK for several minutes and after that stop at random block and for hours nothing after that. Log file contains ten thousands of lines with this:

Quote

ProcessBlock: ORPHAN BLOCK 751, prev=6b9c47a930d19f85eb84f5424cbe8a2ece68eddb0ba96c3783dcdc3a0730fee8
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I have to close wallet, delete generated log file (it is prety large) and start it again. It can continue in syncing again after that. But it stops on another random block again. So have to close and start it again for syncing another blocks until next stop ...
Running on i5-3470, 16GB, SSD, Win8.1, 1Gbps symmetric connection. Previous wallet was well working.

Well first off the newest Halo wallet pre vs post fork downgraded leveldb to match the QT (I wanted to stay on the newer version but Bitcoin also runs old version so Yshurik convinced me to make it compatible). However I'm not sure if you are running Markets/Halo wallet or QT. Since that change was only to markets wallet.

Orphan blocks have nothing to do with the wallet, it's a local phenomenon on the chain. It's possible there is a group of nodes that didn't port over to the fork or you updated too late or some nodes are staking different length of the chain and it should self-correct. So when you have so many orphans the best thing to do is to resync. You can save yourself a lot of time by downloading the bootstrap. I will ask the team to post a link to it. Since I don't have it off hand however I think we now have it automated to update the bootstrap. Hopefully someone will post a bootstrap link here shortly.