import from solidwork to catia
In Catia go to:
File > open > (In file type) select "All Files" > Select STEP file > open it.
Catia will automatically convert the file and open it.
Open failed due to invalid or inconsistent extension type
this error occurs in Catia ...??
I do no have knowledge about solidwork, but see if you could find any option to convert or export the file to "igs" format (not "iges") or simply to catia's "prt" format.
Try saving your file by choosing 'save as' option and select "igs" or "prt" format whatever is available in 'file type' field. It should convert it automatically.
can't work in catia v6