HI, I’m using an evaluation version of rhinoceros 6 for Mac and from yesterday it stopped to save my files saying "you don’t are allowed to save this file, go to Finder>app> and control all the permissions.
but it’s everything fine!
how can I fix it?
Are you using your license stand-alone?
After validating your license, have you Quit (Cmd+Q) and restarted Rhino?
I see you still need to confirm the Rhino account email message.
yess I’m using the license that I’ve copied from the email after I downloaded the program
I do not see a V6 license in your Rhino account.
I see an old V5.
this is strange, how can I re insert the license?
I see you requested the license but I don’t see anything indicating your have added it to the Cloud Zoo or Validate it stand-alone.
You must add the license one way or the other:
I can’t tell that you’ve done either one, and you still need to confirm your email address to finish setting up your Rhino login account.
sorry I’ve done it right now, but it still doesn’t work
Okay. I see you have added the license to Cloud Zoo and verified your email address.
You should be able to Save/Export now.
Is that not true?
no it not working at all.
I tried to eliminate the app and reinstall but it start and don’t ask me the license.
The V6 eval license is in your Cloud Zoo account.
Start Rhino and when asked for a license, click Login.
Provide your Rhino login account credentials if asked.
Rhino should start and Save/Export.
Any luck?
i restarted mi MacBook and, don’t ask me why, now it work !! thanks a lot and sorry for disturbed you .
same thing just happened to me. You have to restart the computer to be able to save.
This not saving until after a restart is a bug we have been unable to duplicate so it remains unfixed.
To fix this, we will need someone to contact us during business hours that has this problem and has Not restarted.
We need to remote session on to the machine to see what the specifics are.
So far it’s been impossible to get someone that has the problem to contact us and not reboot.
File save with Rhino for Mac is nightmare if you will open file from local network. You must have computer open and in network. If file is open, but you will close computer or go off from network you can’t close the file any more. Rhino will ask to save, you can click “save” or “not save” file will be not saved and is impossible to close Rhino and open file. This error last 6 months or something. Year is now 2024, version Rhino 8.
There is impossible to save, move, dublicate file (you can dublicate, but new file will be original, your changes will not be saved). Only way to save your work is “export selected” command. So if someone will be in trouble with this error this is way to keep your work. And you can’t quit Rhino, you will be in loop quit->do you want save the changes …-> what ever you click → nothing happens.
Same situation. Can’t save, can’t dublicate or move open file to local or local network computer. If you don’t save file before you leave local network you will be in trouble when your computer will reconnect later. 
Only way is to use “export selected” command to keep your work.