Hi, the mod seems interesting, so I tried it in my current game (which has a few mods like Krastorio and Space Exploration). I can craft and place a remote monitor, but when I click to open the GUI, I get a crash window with the following message:

The mod Remote Monitor (0.0.2) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event remote-monitor:on_gui _opened (ID 88)
__remote-monitor__/control.lua:114: attempt to index field '?' (a nil value)

Does this help? I'm happy to share my save game file.