Hello to the community.
I don’t know why, when I try to open some sketchup files, the program says “unexpected file”, but I can see the thumbnail of the model. Why this happens? These models are important to me. There’s a way to open them again?
Yes is the 8.0-14346 version. I tried to download that version to see if with that it would be open, but nothing. Can i send the model to someone that can try to open it again?
Trimble provides the support and maintenance services for SketchUp Pro for an additional fee pursuant to its standard service terms which are available upon request from Trimble or at http://help.sketchup.com/en/policy. Support and maintenance services are not available for SketchUp Make.
(Emphasis by me.)
That said, from time to time they are interested in how model files get corrupted, so that they can fix bugs.
But your models are from version 8, a nearly 5 year old version (v8M3,) that has been unsupported (all editions) for more than 2 years (as of last November 3rd.)