Taxi wrecked entry in lou.log files.
This is not an error. This is an event. It is a symptom of another problem. It means zztaxi.exe stopped in an abnormal way. It is something that occured, most likely as a result of zzlouie.exe failing. It's technically possible an FTP task failed but that doesn't usually result in a taxi wrecked.
When zzlouie.exe starts it will also start its companion zztaxi process. Other instances of the zztaxi.exe processes can be initiated by MaxRecall's FTP task.
If zzlouie.exe aborts/ends abnormally/crashes then most likely it's companion zztaxi will also crash, or wreck.
If you see TAXI WRECKED in the lou log then you need to look for an error message entry in the lou log prior to the taxi wreck or you need to look in Windows Event Viewer to see if there's an error there for TPO or MaxRecall Scheduler or zzlouie.exe.
Then troubleshoot that error.