Cannot install Photoshop CS3 or CS5 [CS3 is dead, LOCKED]
I bought Photoshop as a CD so have a licence and upgraded to CS3 and CS5. (I have serial numbers for all 3)
The CD no longer works.
I am trying to install on El Capitan.
I downloaded CS5 but when I click on install I get the message:
“Install” is damaged and can’t be opened. You should eject the disk image.
I was told by support chat I can download CS5.5, so I downloaded from the SC5.5 link (although the download was actually 5.1)
The installer for that did open I put in my CS5 licence serial number I get the message:
The Serial number you entered is valid but a qualifying product cannot be found on this computer

So I then chose CS3 from the dropdown and put in my serial number but then get the message that the number is invalid. I tried both my original CS3 number and a new number I received today from Adobe.
I also tried installing CS3, which did install but when I open the application I get a message:
To open Adobe Photoshop CS3 you need to install the legacy Java SE 6 runtime
I installed runtime from the link, but then I still get that message even after installing it.
can anyone please help?
Thanks
