Thanks Borate
I have sent you a PM of the portable project file. Not sure if you're the person I'm meant to send it to.
1. Yes, I've saved project files as I go along and when I go back to the earlier ones they are all doing something similar with respect to not all tracks not being displayed (likewise for some auto backup files).
2. Performed clear unused cache file.
3. I've done a couple of big projects on this version (7.25v) and they have been very successful. This current project worked for me last night. I'm reluctant to update, I only do a few projects a year for some fun, the discount to upgrade really isn't enticing at all.
Thanks Stump