^^ This might have something to do with it ^^. You might want to consider updating your firmware, there is a new version available Ortur – Firmware Repository – Ortur it’s currently up to 1.78 and doing this “could” solve your problem ($262 could be too low). Type $$ and then hit enter and post results. Type $# and hit enter, post those results. I would strongly recommend opening a new thread. This one was closed over a year ago.
After a quick bit of research (I haven’t messed with my GRBL settings in a while) it appears that your “Shock and Movement” setting is turned off ($262=0) so I’m not sure why you’re getting that message. At this point I would recommend updating your firmware and go from there. Did this problem just start? Are you getting this message at startup or when trying to run a job?
You’re very welcome, I’m glad I was able to help. I wish you continued success. If you need any help in the future, don’t hesitate to ask, there are a lot of knowledgeable people on this forum. Me, I just get lucky every now and then.