I was having problem while trying to convert rawcap files (when I press "build selected files" it crash, so I think its the preview thing...)
So I read that there is a "RawCapConv No Preview" but I cant find the shortcut or .exe in the main folder
(http://img.fenixzone.net/i/4hfiRpe.png)
Sorry for my bad english.
The shortcut to "RawCapConv NoPreview" should be in your start menu, but it is just -- /nopv as an argument for RawCapConv
Example
C:\Dxtory\RawCapConv.exe /nopv
** Beware this option is ON by default **
(http://i.imgur.com/UYdFXsU.png)