I seem to be getting the same issue as described here: http://gis.stackexchange.com/questions/22427/fme-error-failed-to-validate-fme-worker-licence-key
After the same amount of time I get "Failed to validate FME worker licence key" - after approx processing 1 000 000 objects. I need parallell processing due to the size of the data, I have tried Aggressive only, and also Extreme.
Below is a screenshot showing part of the process. The Parallell runs in Parallell (:)).
After approx 1hour 20 minutes the logfile fills with "Failed to validate FME worker licence key" and the fmeworker.exe gets stuck with no work done (0.01 percent CPU constantly).
I use FME 2016.1 - floating license - Oracle Edition.
Also tried on FME 2017 - same issue
@Mark2AtSafe