Nereo, support Second Inventory did a test and what came out is that the avination servers are not reacting or takes to long to react so that SI gives up trying to fetch the data. I filled in a ticket to Avination support but havent received an answer yet.
But keep trying to export. I have had it, that suddendly i was able to export. Of course in such occassion I exported all I could to use my good luck lol.
please submit a ticket to the avn support. I guess the more do this, the best they will see that this is a problem user have in general and not only me.