I tried searching a bit for this and saw a little bit of other people having problem with Technic chests in schematics. I had the same issue so I switched to the default chest. Now I'm seeing an entirely new issue. With the technic chests, they were just blocks. Not even chests. Now with the default chests, they are still chests but their inventory isn't recognized. It's just a blank grey screen with my inventory. If I click where the inventory is supposed to be it says...
GUIFormSpecMenu::drawList(): The inventory location "nodemeta:16,46,23" doesn't exist
Is this common with everyone or does this relate to an inventory mod I am using? It wasn't doing this before so I'm concerned. I'd like to share my schematics eventually without instructions to replace EVERY single chest with a new one.