Havent read through all the posts, but one solution to see previews is to run Sketchup, go to : File -> Import. Change "type of file" to .skp and preview all your files by selecting your file in that window.
Havent read through all the posts, but one solution to see previews is to run Sketchup, go to : File -> Import. Change "type of file" to .skp and preview all your files by selecting your file in that window.