It started on just my main but now my alt also occasionally experiences it.

Mindrunner and I have had varying success in solving it by either raiding/gathering/going on a mission. None seem to work 100% but usually after one of these you could access it again.

I personally found the best way was to find some gift in 2-1 quickly. It seems getting a new gift would halt the error from happening for a day or so for me.

When was the last time you guys updated your flash plugins?