Importing Enage '13 into Storyline issues

I am trying to import an Engage '13 project into my Storyline and followed the directions below. My interaction.html is html5 (not sure if that makes a difference, but did rename to index.html5) When I direct Storyline to the Engage folder and click 'Test' or 'Ok', I get an error message "Could not locate an index.html or index.htm file in the specified folder. What directions can you give me to make this work.

You can do this via a web object.

1. Have all of your Engage output in one folder.

2. Rename your Engage.html (Studio 09) or Interaction.html (Studio 13) file to "Index.html"

3. In Storyline,click insert web object and click on the folder icon.

4. Direct Storyline to the Engage folder (just select the folder, no need to navigate inside).

5. Click Ok.