Sketchup 2021- won't export current selection

I have this issue again (I think). This is more than frustrating!
The difference this time is that only some components in the file don’t export.
I have saved in 2019, and also exploded and regrouped one of the components. But still nothing happens when export is attempted.
As usual, this is part of a job needing completion now! So any clues would be appreciated.
The textured parts in the file export, the untextured parts don’t.
Premier_Flange_01_Images.skp (3.6 MB)

I’m not following what isn’t working, are you trying to export all or part?
I had no issue exporting these bits.

They simply would not export in any format from the file, but I just found that if I copy each one individually to an empty file it will export, without the save only selected bits, checked.

There is something odd your end, I can export any or all of your model.

What version SU?

21.1.279

I see it is available - so I will update and see it that works.
Thanks for your help again.

The selection export bug was fixed in the latest update about a week ago. Update SketchUp and all should be well.

They didn’t fix the mirror bug in export though, so it is still useful to have the separate stl exporter.

It seems to be working fine now, with the update done.