How do you stop this popup?[solved]

[Candle]

Everytime I inport a background that popups.
Its a new room!!!!

[Gilbert]

This happens, as by default, when you create a new room, the background is set to 320x200 total black, so when you import a background which's not 320x200 it will remind you of that.

To remedy this, there's actually a not-so-well-documented feature, use the _blank.crm room file.

Just start a game, go to room screen and import a black bg with size of your choice (it need not be black, it's up to you), and then save it as _blank.crm in the game's folder, that way, whenever you choosed "new room", it will load _blank.crm and let you work with it as template.

[Candle]

Thank you Gilbot, that did the trick. good to know these little tricks and you don't know of them unless you ask.