@Jody, sorry still an emtpy window.
Logs look like this:
08:07:11.289|Verbose|ExchangeHierarchy |4 |GetDatabases for Exchange: DAG
08:07:11.291|Verbose|MailboxGetter |4 |AdHarvester: Mailbox harvest success - got 957 boxes
08:07:11.469|Warn |BposInfo |4 |No BPOS username set
08:07:13.905|Trace |Listener |5 |Accepted incoming connection from 10.10.128.41:18324
08:07:14.109|Trace |CentralService |4 |Received message from Agent
08:07:14.109|Trace |Request parser |4 |Processing configuration request from Agent
08:08:11.677|Error |CentralService |3 |Error occured in get mailbox update check
System.InvalidCastException: Specified cast is not valid.
at System.Data.SQLite.SQLiteDataReader.VerifyType(Int32 i, DbType typ)
at System.Data.SQLite.SQLiteDataReader.GetString(Int32 i)
at RedGate.PSTImporterForExchange.Engine.Repository.DbMailbox.GetMailboxes(Boolean is365)
at RedGate.PSTImporterForExchange.Engine.Repository.RepositoryMailbox.GetMailboxes(Boolean is365)