another thing that seemed to work is just adding heaps of weps etc to your Bank in Gibbed. And, to add more BP slots (which EVERYONE seems to have trouble with. though I've overloaded my BP by just pasting weps in and who needs to pick weps up when you can do that?).
To increase your BP slots:
Go to the Raw tab - click the down arrow for Black Market Upgrades.
Change the 8th one down to 0.
Load up your game and go to the black market and buy the available BackPack slots.
Rinse & Repeat. (though I only raised mine to double)
........set the other values to over 5 if you want, they're for the ammo upgrades (though I only raised mine to double, but I've heard of ppl raising the numbers into the hundreds)
just make sure you purchase all upgrades first before changing the save, then change the value to zero (it might say 1 to 5 before you do this?). Then you will be able to buy upgrades again as though you had never bought them in the first place....see crazy earl.....buy BP upgrades (don't forget to reset your Eridium to 99).... go back to save editor, the number will have changed from zero back to 5. Then just repeat and it -should-(?) think you have bought 0 BP space upgrades and let you do it again and again. The size of your backpack is stored elsewhere, presumably the first field inside/under a section labelled InventorySlotData in Gibbed's editor, but I think you need Pythin or something like that to play with that.
(I got some of this info from elsewhere....I take no credit for it)
- Hope this helps!