First rule: Never, ever "migrate", "transfer", "copy" or "move" an Adobe application from one computer to another one. Don't believe what Apple says.
That'a a guarantee for never-ending grief.
Always install from scratch, from the original media.
From what you describe, you have been using pirated software all this time. What you recount there does not make sense at all.
It looks like the version you have is Photoshop CS4?
CS4 is obsolete software, even if it was legitimate—which yours appears not to be. Both CS4 and CS5 are no longer supported by Adobe, in any event.
Adobe does sell Photoshop CS6 with a perpetual version. $700 for the standard version and $1,000 for the Extended version.
You can also subscribe to the Photography plan, which gives you the current Photoshop plus Lightroom, all for $10 per month, though you never get to own the software.
Creative Cloud subscriptions are $20 a month per application.
Please note that you are not addressing Adobe here. We're mostly users like you.
…The place I bought the laptop from originally is not responding to my emails - I suspect they are no longer a business
They weren't legit to begin with. No one, absolutely no one is authorized to sell Adobe applications already installed on a machine,
Thank you for your responses. I suspected as much when I purchased it on eBay but when I asked directly whether it was a legitimate. legal version I was told it was. I did not know enough to ask for the serial number. I am willing to purchase the software but cannot find it on Adobe's website. I guess I have to call them. What about this place - do you think it is legitimate? http://buytechsolutions.com/softwares/adobe/graphics-photo/photoshop/adobe-photoshop-cs6-w indows-download-delivery I am guessing no since you say to install directly on the machine, not a download from a 3rd party. I will call Adobe this week to find out how to buy the physical CD to install. Thank you!
You can buy CS6 directly from Adobe as a download only, at the prices I mentioned: $700 for the standard version and $1,000 for the Extended version.
Creative Suite 6 <=== CLICK on this link.
If you do buy it, immediately after downloading it, burn the installer to a DVD.
The "buytechsolutions" website you link to looks very much like a scam. I would stat away from them like the plague. No one selling at those prices can possibly be a legitimate Adobe reseller.
Try amazon.com for comparison: