I have created a GCode file using inkscape and it provides me with the text document with the GCode in it as plain text. When I click on GCode in the CNCC software and try to open the file, CNCC states it is the wrong GCode file type, and to open the correct file type. I have tried saving it as numerous different file types but CNCC will not open it. Am I doing something wrong? is there a correct file type for GCode?