When I arrived at Armand K-11, I had full cargo of Luxury goods.
At Armand K-11 I accepted a mission to deliver a Datapad to Resoni J-3.
Mission Comp said I was full of cargo and Datapad was in station hold.
Sold existing cargo, loaded Datapad.
Went to Resoni J-3, Mission Comp said I didn't have Datapad.
Checked my ship and CLEARLY had the Datapad in the hold. (Value 2878 Cr)
Tried undocking and landing again. No change.
Tried "updatestation" and undocking and landing. Still no change.
Mission Comp would not "see" the Datapad.

Hmm, yeah, I think there's a problem where, if the datapad is dropped into the station hold, it doesn't get ID'd correctly. I haven't tracked it down yet, but it's on my list, and it should be fixed in the next release.

Made a verbose 6 file of this event, Ray...on it's way in an email.

Samething happened to me but it was with NanoFeed or something like that and i got it from the station that they wanted me to get it from and it said "You must get the cargo from Latos sector x to get the money" which i had done.