Thanks for your help....I'll give it a go.

It's okay really because photoshop can sort it out pretty easily....just thought it was strange that it's changed with the update.

Okay - just exported again as transparent png, loaded into photoshop and it has a white background!!! It's me I know!! Don't know what I'm doing wrong as I was able to do it over and over in the previous version....

Okay......I'm going to try again. Will get straight back to you....

I've found that exporting a 2D png does not export with transparent background!!! Sketchup did it perfectly before the 2017 update....

I have been learning Sketchup for a couple of months now and for the first time in my long mac-using life, I'm considering changing to PC....most of the good tutorials out there concentrate on PC and not on mac....and there are some big differences....Specifically, I'm looking for information on how to save my own texture libraries within Sketchup. At the moment I'm importing JPG files from my personal library....and that's fine, but time-consuming. Also, I've just purchased some .skm texture files and can find nothing on how to import them into my texture library on a mac.....I know I'm probably just a newbie who's overlooking the obvious, but any help would be so appreciated....