The wallet had mandatory update. I think some people will need this information which ones following this coin by this site. I wanted to share this info. This is from official server of OTS coin by Devs. Need to update your wallets before the block 14400
"Mandatory Update OTS V 1.1
we fix :
-Fake-PoS attacks before the stake start
-masternode payments issue
-new theme for QT wallet
https://github.com/otscoinproject/otscoin/releasesplease everyone need to update before the block 14400"