Trouble after upgrading to 7.4.2

[musicman23]

I just upgraded to ProTools 7.4.2 on a Mac and I can't open the sessions saved on my external hard drive. The message I get is the following:
"This session is saved on a volume set to "Transfer" only. If permitted, set the volume in question to "P" (playback) or "R" (record) in the Workspace. Otherwise, choose OK to save a copy of this session and its media to a valid playback volume. The session copy will automatically open from the chosen location."

What does this mean?

Thanks for your help.

[bennychico11]

ummm....it's telling you to open the workspace and set the drives to R (record) instead of T (transfer)

have you tried doing that?

[MessianicDreams]

Originally Posted by musicman23

set the volume in question to "P" (playback) or "R" (record) in the Workspace.

What does this mean?

Open the workspace window....select the appropriate volume...change "T" (transfer) to "P" (playback) or "R" (record).

[musicman23]

The message appeared when I was trying to change from T to R . So, finally I called Apple Technical support and they helped me:1) I copied all my files from external HD to a new folder,2)I went to utilities and changed the settings of the volume on HD--then I was able to change workspace from Transfer to Record.3)Dragged my audio files back from the folder to HD