Character won´t move when the resolution is changed SOLVED

[Braceface2007]

Hi guys,
First of all, thank you for this great software, support and tutorial videos that you do to teach us to work with it correctly.
I just started getting familiar with the program. What happens is that as soon as i change the resolution of the game in the general settings, my character won`t move anymore, though it does move on 320x200 resolution and when there is no background. When i change resolution or background, it doesn`t walk anymore.
Thanks beforehand.

[NickyNyce]

I would imagine once you change the resolution that your walkable area is changing too. The screen is now much larger and your character is no longer on the walkable area.

Why are you changing the resolution while your making the game?

Oh, and welcome aboard. Prepare to not see sunlight for a while. 

[Khris]

Yes, when I start a default game and change the resolution to 640x400, AGS tells me to import new backgrounds for all rooms.
If I don't do that, the game sort of crashes.
When I do that, AGS warns me that changing the size of the background results in all areas being erased.

Since characters by default move only on walkable areas, the character can't walk anymore until I've drawn new ones. Just open the room, import a properly sized background and redraw the walkable areas (or simply flood fill the room for testing purposes).

[Braceface2007]

Thank you very much for the tip Nicky. Now i get the walkable areas and resizing issues