I just found out that my new iMac with Mountain Lion won't allow Final Cut 7.0.3 to work! Bummer. The arrogant Apple "support" just said, "Get FCX, it's only $299 and you can transfer your old FCP work over using a $10 App - 7toX". What to do?

Why won't your iMac run 7.0.3?

MtD

I have FCP 7 running under Mountain Lion. You didn't "Migrate" the application from another computer did you? Did you install fresh from the discs?

There are so many small things that are installed into the System Library that Migration Assistant doesn't get and bring over. Use FCS REMOVER from Digital Rebellion to uninstall it. Install it from the discs...update fully using SOFTWARE UPDATE in the System Preferences.

No faster, eh? What are the processor differences? That's the only thing that determines speed of rendering, really.

Just install the upgrade. It will ask for the original serial numbers, then the upgrade serial numbers.

I'm about to attempt the same thing -- migrate everything from my old iMac (running 10.6.8) to a brand-new iMac (running Mountain Lion).

Still using FCP7, with no intention of switching to FCP X.

Should Migration Assistant work for me? Would updating my old iMac to Mountain Lion first make a difference? (I've already purchased it for my laptop, just haven't used it on my iMac).

Again...DO NOT MIGRATE FCP 7! Install fresh. Read my posts above for the reasons why.