Hi Xiao

I will try to answer these, though they are probably more appropriate for the Slicer discussion/help boards as they do not affect DTIprep directly.

1) I think that warning disappears when you open it with a shift/right click (a menu opens up and select "Open" ).

2) In linux, you can access any Slicer module via "Slicer --launch ", e.g. Slicer --launch DWIConvert . I don't think that works in Mac OSX or Windows (not fully sure)

Best regards
Martin