How to delete unspported data?

[Unregistered]

I have NX 60. I have a file in clie view that I want to delete.
But I keep getting message saying " selected data is insopported.
Is there anybody could tell me how to delete it ?
I also tried to reset but didn't work.

[nx70]

if it is a picture, go to DCIM folder via Clie Files. then try to locate the picture-> rename the picture first to identify it definitely. BTW there are much better app than CLie Viewer(faster...) ant try the update of Clie Viewer.