@unknownuser said:
Start -> run...
type "cmd" and then press "return"navigate into your sketchup root directory by typing for example:
"cd C:\program files\google\sketchup 6" and press "return"now you're in your sketchup6 root folder. Type:
"regsvr32 thumbsup.dll" and press "return".
I'm having the same problem in that I don't have previews for any SU models which is a pain as I want to tidy up some folders but can't when all I have is the description.
I'm running Vista 64bit so if I follow pibuz's advice would I have to type "regsvr**64** thumbsup.dll" and press "return".