I do not see my skb file in the open file window

I’m having an issue were I do not see my project skb file when I select ‘open file’ in SketchUp Pro. The project opens fine when I select the file in Windows File Explorer.

Additionally, when I send the file over to layout, it will not open. When I select ‘view all file types’ and try to insert the drawing, I can see the file but gives an error when I try to open.

Running 2021PRO v21.1.299

Any ideas?

skb is the backup file, you should be working with the .skp file.

Thanks, somehow I saved the file with an skb extension. I re-saved and made sure it had an skp extension and now it’s working.