1. when I unpack The neutron_blockchain_latest archive.zip writes rror

ERROR: CDB() : error DB_RUNRECOVERY: Fatal error, run database recovery (-30974) opening database environment
Error initializing database environment /wallets/neutron/! To recover, BACKUP THAT DIRECTORY, then remove everything from it except for wallet.dat.
Neutron: Error initializing database environment /wallets/neutron/! To recover, BACKUP THAT DIRECTORY, then remove everything from it except for wallet.dat.

2. when I delete from the database folder the files gives an error

EXCEPTION: St13runtime_error
init_blockindex(): error opening database environment Corruption: CURRENT file does not end with newline
dash in AppInit()

3. when I rename the blk0001.dat in bootstrap.dat checks up to a certain block (~1200045) after restarting, block synchronization still does not start.

4. In Windows everything works, clings. Error only in Linux system.
Maybe something related to leveldb their several versions exist.