I have CS4 (discs) and a brand new Mac OSSierra and did a complete migration from my old Mac and Photo Shop won't work - I get an error 150:30 with directions to contact support. I did that and they could not help and said to post here... My previous Mac had Sierra and it worked fine. I spend a lot of money on CS4 and am pretty bummed that I can't use it any longer... any help would be appreciated. (I can't re-install the discs as there is no driver on this new computer). I have all licensing info..
150:30 is a broken license in CS4 caused by migration. There is a fix that uses Terminal.app (use Spotlight to locate and launch that) and a supplied Python script that will repair the license in place.
I have posted a screenshot guide to running this script. https://forums.adobe.com/thread/1714695 See Posts 11-18
All I ask is that you carefully read and follow the directions. Attention to detail is important here.
If this does not work, there are specific instructions for installing CS4 in Sierra. We'll cross that bridge if we come to it.