box pops up with buttons that do nothing

can any one tell me what this box is, It has popped up in the past but not for like 10 months. All I pressed was Build.

no-one?

perhaps posting a snippet of your script file might help?

never seen it in the time I have played with 3dgs.

what version are you using?

there is no script file, I just tried to build the level in WED. I'm using A8 free