You can’t open Inspiration documents without Inspiration open.
The Inspiration file type (.ifs) does not have the correct settings.
- Right click on an Inspiration document and select Open With -> Choose default program…
- Click Browse.
- In the address bar for the window that appears, type “C:\ProgramData” and press Enter.
- Open the Inspiration folder.
- Click on the Inspiration application and click Open.
- Click OK.