A bug that breaks the mod in 0.18
Spits out a bunch of errors if you try to make module profiles.
Screenshot:
https://imgur.com/a/Xg373xu

I am getting the same errors. I get them even if I just open the interface. I also do not get a pipette when clicking the MI button in the shortcutbar, which makes it impossible to use the mod. The pipette issue is not limited to Module Inserter; I also do not get the pipette for YARM.

Fixed the unknown sprite error.
The shortcut not working is a Factorio bug: https://forums.factorio.com/viewtopic.php?f=30&t=81940

I added a command to get the tool on the cursor: /module-inserter
Use it with an empty cursor to get the selection tool