We run our own BSNEE 4.4.0.0. Players that have been used in multiple customer networks (HD1023 used on customer A gets moved to customer B network) will get a 403 Security token error when they attempt to upload a screenshot. Players that are only ever on one customer network do not have this issue.
We had this occur back when we were running BSNEE 4.1 and BrightSign gave us some code to fix it.
Any of you "power users" addressed this in version 4.4?