Hello.  I am trying to use a 4 axis post processor in SolidCAM 2026, but the software will not let me select GPP files.  It only allows me to select CTL files.  I understand that SolidCAM used to support GPP files.  Am I doing something wrong, or does SolidCAM no longer support this?  

I am very new to SolidCAM and need a 4 axis post processor for my Taig CNC mill running on Mach3.  I am open to other solutions, including creating my own post processor if someone can show me a relatively easy way of doing so.  Thank you for the help!

EDIT:  My question is answered. GPP files are for solidcam. I am using solidworks cam, which needs a CTL file.