This mod seems to be the cause of errors loading other mods with messages like Error while loading item prototype "laserrifle-charger" (item): Unknown flag "goes-to-main-inventory" and Error while loading item prototype "lua-combinator3" (item): Unknown flag "goes-to-quickbar".

What mods add these two items?

Actually, I'm pretty sure that it is not my fault. Since extended descriptions changes pretty much every item in the game, it will always be blamed for crashes

The first one is added by either Laser Rifle or Laser Tanks, I'm not quite sure. The second is LuaCombinator 3.

Hmm you might be right, after disabling those mods everything else loads fine.