>Now what exactly was this problem? Was it with the goats or was it a problem with the process of extracting ATRYN from the milk at the processing plant?<
No to both questions. From the text you just quoted:
“…rendered unusable during the fill process at our US based fill/finish contractor.”
>Is it a problem that was corrected or is this something that could be an on going issue?<
Could it happen again? I doubt it. If it did happen again, GTC would presumably switch to another fill/finish contractor.
>I am wondering if this was part of the sell off when certain people learned of this problem.<