Saving problem Rhino 5.5.5

I’m having a saving problem in Rhino 5.5.5

When I open a rhino file and do some alterations and then try to save it, it won’t save.
I have tried to change the the app. in finder but it always pops back in an older Rhino app.!

Schermafbeelding 2020-01-08 om 15.46.40|523x265 Schermafbeelding 2020-01-08 om 15.56.31 Schermafbeelding 2020-01-08 om 15.58.39 Rhino extention.pdf (88.8 KB)

What is the full file path where you are trying to save?

In particular, is there a directory called K.V.3?

Is this a local drive or a remote drive?

Thanks to your reply I’ve solved the problem.
It was the remote harddisk which caused the problem.

Thanks a ton