Error: Warning: invalid layer

Solution or Workaround

Why do I get the error: "Warning: invalid layer"?

There are 2 reasons this message can occur:

1. The wrong layer type is specified when creating a new layer. For example, if 'line' is specified as the layer type when creating a point layer.

2. The name specified for a new layer already exists in the geo file.

Make sure each layer name is unique and that the layer type is correctly defined.