Let's say you usually work in 48 kHz. But you want to open a 96 kHz session.
1. Before launching Pro Tools, change the sample rate to 96 kHz on the user panel of the interface.
2. Launch Pro Tools.
3. Create a new temporary dummy session in 96kHz.
4. Close the dummy session.
5. Now you should be able to open a 96 kHz session.
Pro Tools seems to create new sessions in a different sample rate easier than opening new sample rate sessions. But for me anyway, this procedure works every time.
1. Before launching Pro Tools, change the sample rate to 96 kHz on the user panel of the interface.
2. Launch Pro Tools.
3. Create a new temporary dummy session in 96kHz.
4. Close the dummy session.
5. Now you should be able to open a 96 kHz session.
Pro Tools seems to create new sessions in a different sample rate easier than opening new sample rate sessions. But for me anyway, this procedure works every time.