The mod Actual Underground Pipes (0.1.7) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event the-one-mod-with-underground-bits::on_player_cursor_stack_changed (ID 35)
__the-one-mod-with-underground-bits__/control.lua:36: attempt to index a nil value
stack traceback:
    __the-one-mod-with-underground-bits__/control.lua:36: in function <__the-one-mod-with-underground-bits__/control.lua:12>

The above error occurs when you have toggled to an underground pipe (Any type. Ghost or physical) and then open the remote view without first clearing your cursor.

Thanks for the report, I'll look into it

Fixed in latest release!

This bug seems to be back, getting this error when entering remote view with an underground pipe:

The mod Actual Underground Pipes (0.1.12) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event the-one-mod-with-underground-bits::on_player_controller_changed (ID 58)
__the-one-mod-with-underground-bits__/control.lua:24: attempt to index a nil value
stack traceback:
    __the-one-mod-with-underground-bits__/control.lua:24: in function <__the-one-mod-with-underground-bits__/control.lua:11>