NLC Under Attack does bugs and doesn't complete.

[Shidoshi]

Describe the problem. Be as specific as possible!:
Second quest Icebyrd Slimm gives you (NLC Under Attack) apparently tries to give you an item and tells you your slots are full. I have free slots everywhere.

Can't continue with the quest chain...

Images of problem

[MuscleWizard]

not only that, but wolf spiders drop nebulite boxes at an almost 100% rate, lol
you can find them by going right from nlc and never stopping

[Shidoshi]

Forfeiting and retrying made it work.

[Infernal]

not only that, but wolf spiders drop nebulite boxes at an almost 100% rate, lol
you can find them by going right from nlc and never stopping

So do like skeles.
But I can't seem to get anything but D ranks.

[ShinkuDragon]

250 boxes, D rank errything.

[ultimax21]

Next up, buy alien cubes or do that quest that takes you 60 days to complete (300 kills, 5 times per day) for a B rank neb -_-. Well problem semi solved with forfeiting quest anyways, boxes on the other hand not going nowhere.