What is the problem?
When I print a g-code containing mid-print pause (M601) with Octolapse running, I get some kind of communication error.
What did you already try to solve it?
Never had this issue without running Octolapse. So I believe it has some kind of correlation.
serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible