MacMost Q&A Forum • View All Forum Questions • Ask a Question 12/8/1810:11 pm Photoshop Problems With Mojave I have an older version of Photoshop (5). It worked ok in High Sierra but not Mojave, any answers? —– Jack B Comments: One Response to “Photoshop Problems With Mojave” Gary Rosenzweig 1 year ago I would ask on an Adobe forum. But isn’t Photoshop 5 very very old? According to Wikipedia, it is from 1998! I don’t think it would work at all in High Sierra. Maybe you mean CS5? That’s from 2010. Either way, you should probably update. Or, if you don’t want to update because of the cost, then at least look to switch to an app that fits your budget. I have a list of them right here: Mac Photoshop Alternatives. I’ve been using Acorn and Pixelmator a lot myself. Related Video Tutorials: What To Do About Those Mojave “App Is Not Optimized” Messages ― How To Use PhotoShop Layers In Final Cut Pro ― The macOS Mojave News App Comments Closed.