title: Database lock acquisition failure with hsqldb
body: <p>I'm running this as an in-process connection, using this JDBC URL:</p>
  
  <p>jdbc:hsqldb:file:C:\Program Files\360Works\SyncData2_MirrorSync\Configurations\3d0c6a29-294b-4a24-b075-70302345fdb5\mirrorsync</p>
  
  <p>I am getting this error, even after completely rebooting the computer:</p>
  
  <p>java.util.concurrent.ExecutionException: java.sql.SQLException: Database lock acquisition failure: lockFile: org.hsqldb.persist.LockFile@e27ecaee[file =C:\Program Files\360Works\SyncData2_MirrorSync\Configurations\3d0c6a29-294b-4a24-b075-70302345fdb5\mirrorsync.lck, exists=true, locked=false, valid=false, ] method: checkMagic magic: '0000000000000000'</p>
  
  <p>How can I fix this?</p>