There is fork happening in the EmerCoin network after block 136404.
Some clients do not receive correct block 136405, and continue staking.
Please, check your client. Run from console:
getcheckpoint
If it prints:
{
"synccheckpoint" : "0000000000000006d2010d4a879378a448c4a12e156127d7a7753b93fccb676d",
"height" : 136404,
"timestamp" : "2015-11-29 17:17:16 UTC"
}
then your client has been affected by fork.
To resolve this issue, needed re-download blockchain again.
To do this:
1. stop emercoin program
2. Backup your wallet.dat (not necessary, but this is more safe)
3. Delete all files, but wallet.dat and emercoin.conf in the directory
windows: C:\Users\(username)\AppData\Roaming\EmerCoin
linix: ./emercoin
4. Restart emercoin program. Wait for ~30 minutes to reload blockchain.
We're working for investigate this issue, and will release patch soon.
Thanks you for patience.
I will have to wait for a patch. Deleting files and redownloading block index has stuck.
I am still here..
downloading blockchain is stuck on 134081 and 163997 84.17% completed from last 40mins.
WARNING: Checkpoint is too old. Wait for blockchain to download, or notify developer of the issue.
Honestly sounds like you might be better off doing a clean install of it. Just back up your wallet, uninstall the program, and wipe out anything that's left in appdata or program files directories (assuming this is windows). Reinstall and let it resync after that.