I have purchased the CS6 Photoshop but when I try installing it a message pops up saying that my mac doesn't meet the system requirements of the installer. It requires version 10.6.0 and I own the Mac OS X version 10.5.8. Do I need to return my order and exchange it for a less advanced software?
Yes , Photoshop CS6 requies 10.6 and later hence you are not meeting the minimum system requirement.
You can return the Photoshop CS6 but Adobe is no more selling the CS5.5 or previous version of its software so I would say if you have intel based processor which support 64 bit application the best option would be to upgrade your OS to 10.6 or 10.7 , if your processor doesn't support 64 bit application then you have to upgrade your complete Mac,
Please go through the tech specs of Photoshop to know details and best option.
So, judgement lies in your hand , you want to upgrade the Mac or return PS CS6
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