FastCutter Pro v1.01
• A source object or cutter who have overlapping faces that intersect will result in an invalid boolean.
Please ensure your source and cutter faces do not overlap before cutting.
• A simple box will return bad boolean results.
Apply a Subdivide modifier to increase the faces to resolve this.
This issue appears due to some Autodesk changes in the Proboolean class and is currently being investigated.
• A very high resolution source or cutter will require significant processing time to cut.
Divide the mesh into multiple separate parts when possible and cut those.