Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Is the file created by some other CAD tool such as Kicad?
How are you asking to open it (i.e. is this an 'import and convert' style command or simply 'open' when it expects a native format file)?