Path Variables
If the OWL import catalog is set using a path variable (as described in using a path variable to share OWL import catalog files), and this path variable is not defined (as described in setting a path variable to share OWL import catalog files), the Concept Modeler will not be able to locate it. Consequently, the following dialog box will be displayed.

A dialog prompting you to specify a path variable.
Clicking Yes allows you to set the path variable to a root directory containing OWL import catalog files and the import of the OWL ontology to proceed.

Setting the path variable to the OWL import catalog files.