I'm still getting these errors in the Sim room of the Steam client even after closing Chrome completely and all other programs. I also get this error in Chrome even when Screeps is the only window. My computer can run Grand Theft Auto 5 with good graphic settings.

woops, wrong thread

Ok that makes sense. I was about to say, maybe it's cause I have like 20 browser tabs open at the same time.

I'm getting this error message. When there was a problem with the script (a variable wasn't name correctly) the error message didn't appear but then as soon as the script started running the error message would appear. If I clicked terminate it would just appear again in a few seconds.

This only happened in the simulation. With the same script branch it wasn't happening in the world.

I'm using the Steam client. I'm playing the game (not the simulation). When I write some new code into my main script (a comment in this case) and then click World without saving, then click the one zone I control, then the code is not there any more.

It's nice to at least get a warning that your code will be lost if you don't save it, as when switching from one branch to another, but when I switched to World and then looked at some people's maps, and came back, I'd lost code that I hadn't saved.