This mod adds a lot of new items, including (but not limited to) mining drills, solar panels, crates, long-handed inserters and ore & metal compression.
I got this error when start factorio, i play with a lot of mods.
29.291 Error Util.cpp:57: Error while loading item prototype "compressed-repair-pack" (repair-tool): Prototype "compressed-repair-pack" registered twice
It sounds like there's another mod which also loads an item called compressed-repair-pack
I say this because I don't get this error and I don't play with loads of mods :)