Not sure which mod to post this to. I have only tried it with omnitractor 4 but it gives an error message and the icon doesn't show up in the module inserter GUI but you can put modules into it anyway, and if you save it they do put the modules into them but when opening the GUI back up it stops loading the gui when it tries to load the icon for the Omnitractor, assuming it stops because of the error.
Known issues with Omnimatter machines: The icons are missing the tier number. I've added a tooltip with the name (Shouldn't be too much of a problem, since the # of module slots matches the tier)
