I was seeing the following trying to export from Office 365:
Request: /api/ComplianceSearchAction?retry=false Status code: 500 Exception: System.ArgumentException
Now I have often had problems when trying to run exports when I am a eDiscovery Administrator - not sure why as this is supposed to be a universal eDiscovery Manager but it never seems to work, so I removed myself from the administrator role, becoming just an eDiscovery manager and it seemed to return to normal, working functionality.
:)
