Building Gadgets Version
buildinggadgets2-1.3.3.jar

Describe the bug
When using the Copy-Paste gadget, clicking Materials List on a schematic where the mod/item doesnt exist will crash the game
Pack where schematic was made had Flux Networks, which i used Flux Points on the Schematic
Used the schematic on a different pack where Flux Networks isnt present - acessing materials list will crash the game, be it on the table or on the gadget itself

To Reproduce
Make a schematic using blocks from a mod, try to use it on a pack without those blocks existing, try to acess Materials List

Expected behavior
Not crash 🤣
Should have a check for invalid blocks/items

Screenshots

doesnt help much, but thats part of the original schematic
will just crash if i try to acess on a pack without flux networks

Log Files
https://mclo.gs/kaDzRI2

I think i've got it fixed ;) we'll see!