Are you running RB as an administrator?

I assume you used the Temp Audio Directory setting in Preferences to set the folder, right?
Does the folder exist?
Does your user have the necessary rights (permissions) to that folder?
Have your tried a different folder name, or using a path that does not contain spaces just to rule out some weird path issue?
Like Maybe create an F:\TempAudio folder and point it to there, see if anything changes.

Lastly, is this F: drive an internal hard drive?


I do not work here, but the benefits are still awesome
Make your sound your own!