Is this normal during syncing? I just downloaded .11 and ran monerod on ubuntu.
2017-09-18 19:28:28.513 [P2P0] ERROR cn src/cryptonote_core/cryptonote_core.cpp:662 Exception at [core::handle_incoming_txs()], what=Error finding txpool tx meta: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid