I've been attempting to make my own adventure mode map by following the tutorial video by Larian studio as my first foray into modding.

My first area started off creating a bridge similar to the one in the tutorial video with water. Everything up to the point of the video where the bridge is being pieced together has run smoothly, and now I am unable to put items on the map (buildings or walls/bridges) no matter how many times I have rewatched the video to spot my issue.

Any suggestions would be appreciated.

Also, since this wasn't mentioned in the video, how would someone fix smooth terrain colors instead of looking so oddly jaggy/disjointed? I have tried to both erase the paint and use the smooth terrain tool to no avail. Would the slopes' tool be able to fix it?

Timestamp of video: https://youtu.be/zHf_wNTDNIo?t=971

https://cdn.discordapp.com/attachments/317162246398803968/365208390726582272/unknown.png (My map thus far. You can see how the edges of the stream are not smoothed out.)