Both files are more than half-filled with zeroes and are not recoverable.
Hey @DaveR could you please help me? Im having the same problem in a project that i made in may, and didnt opened till today.
NATSUMI 070524.skp (1.6 MB)
Where were you saving the file? Did it get deleted and did you use some file recovery application to try to recover it? The file you shared is not a SketchUp file. It doesn’t even have the SketchUp header. Did you try renaming the .skb backup file to .skp and then try opening it?
Don’t double post.
also can’t open it, but it’s not filled with zero. Colin might be able to salvage stuff.
@colin can u help?
sorry, forgot to ping 
if he is in the US, it’s night right now.
don’t wait. start from whatever previous step you have a skb file, or a previous version.
worst case, you’ll have a headstart if nothing’s recoverable.
This file is not a SketchUp model file. It’s missing the header that tells what version of SketchUp it was made in and it’s missing a chunk of data at the end.
Where were you saving the file while working on it? Are you using a cr acked version of SketchUp?
Do you have the .skb backup file?
IT’s also missing a large chunk of data at the end.
What about the answers to my questions?