Apologies for not noticing your reply until now .
Yes, I am running File Dialog Changer, but if I turn it off and use the system dialog navigation I am able to see and import the files.
Also, if I use have FDC on and I don't specify an extension, a .dmd is created. If I specify .ttm it is correctly created and can be seen. (This will be my workaround ...tough one yes? :)
Can you please fix this?