the mod has the same crash when using the creative mode mod and enabling god/cheat mode I know that the mod author uses the toolbar as an offset for the buy and sell button
I think the mod hickups when the logistic portion of the inventory GUI is gone/deactivated (don't quote me if I am wrong but I think unless you are in the sandbox and possibly also the map editor the logistics GUI is disabled and the inventory GUI is used in an editor as well)
edit: not exactly the same as yours possibly and include a mod list if you have other mods installed as well