Click on Windows Start -> CATIA -> Environment editor to open the Environment Editor.
Click on Environment -> New to create a new environment.
Select the just created environment and below, select the variable CATGraphicPath. There, make a right-click and in the context menu, select Edit Variable.
Under Value, at the end of the displayed string, add a semicolon and following path:
C:\Program Files\cadenas\parts4cad_professional\iface\catia\VB\resources