One or more shapes are crossing the edge of the machine workspace

I use a jpeg file to engrave a picture. The picture is not filling the full jpeg frame and to maximize the woodplate I rotated it about 20 degrees. The picture I want to engrave fits on the workspace, but the edge of the jpeg frame (as it is retangular) runs over the workspace. I believe this is the issue why LB is not starting to engrave this layer.
Is there a way to ovecome the error message and start engraving ?

Any idea ?