The Cargo Log File
Cargo logs data about the transfers it handles. You can use the Cargo log file to view the status of your transfers.
Log File Location
The Cargo log file can be found at the following location:
C:\Program Files (x86)\Aspera\Aspera Cargo\var\log\
Log File Size
Cargo creates a rolling log of a maximum of 10 log files, of ~10 MB each.