I updated concreep and immediately got the following error message, I do not know what caused this error but i do know that no error occered when i removed all other mods, I had other troubles determining what mod caused the problem.

The mod Concreep caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Concreep::on_nth_tick(60)
Concreep/control.lua:151: bad argument #2 of 2 to 'get_item_count' (string expected, got nil)
stack traceback:
[C]: in function 'get_item_count'
Concreep/control.lua:151: in function 'creep'
Concreep/control.lua:29: in function <Concreep/control.lua:14>

This was a bug with how I handled removed tiles. Should be fixed now! Note that concreep may not lay down concrete over previously paved tiles as these tiles contain their original tile type in hidden_tile, even though they're grass tiles. I consider this a bug in Factorio and submitted a report.