Originally Posted by
donuteric
The message is actually an improvement instead of a generic "we're [always] experiencing technical difficulties". You just need to wait 2.5 to 3 hours after activation before you attempt to load.
The Invalid Pack occurs sometimes, but as long as the account is showing the right balance, I normally just ignore it.
I remember reading about this but have recently been able to load w/o issues shortly after buying. Will try to keep a 2hr - 3hr buffer before loading on to Serve next time to see if that resolves the issue.