Players using Editor

For some reason while testing out dynamic lighting on a dungeon, I asked the player who was testing to share screens with me on skype, and I saw they were in the roll20 editor, though they didn't have any DM functions, they still could view the entire map with or without lighting as I did, and also could see the GM layer. How do I fix this?

Did you promote him to GM?

Mac said: Did you promote him to GM? I've never set anyone to GM but I made sure to check the player list, and none of them were.

That's very odd.. just for standard testing purposes, c an you please have your player follow Steps 1-3 of our Solving Technical Issues wiki page, taking special care to temporarily disable all browser add-ons and extensions, temporarily pause your anti-virus, and try switching browsers (for Chrome/Firefox specific issues) to see if one of those components is causing the problem. If all of that fails, please follow Step 4 , including providing all of the necessary information, so that we can further assist you. If it is still occuring after that we can try further testing from there.