Usually these threads work better if someone who actually knows the subject at hand replies. Just saying. Also, demanding help isn't going to get any responses any faster.
It also goes without saying that lisanet has been doing a fantastic job of building Gimp for Mac for the past year or so, and so deserves credit where due.
Now, let's get down to business.
1. NOTE: Skip this step, if you believe you have a valid download and valid Gimp.app application.
If you're not, and want to be sure everything had downloaded properly, go to "http://gimp.lisanet.de/Website/Download.html" and download the proper file to your computer (again). After that, fire up Terminal (/Applications/Terminal.app) and type in "$ md5 ~/username/filedownloaded.dmg" without the $, and replace "username" with your username, and "filedownloaded.dmg" with the name of the file you downloaded. Now compare that hash to the one on the download site. If they differ, then your download is corrupted. (Explanation of MD5 can be found here: "http://en.wikipedia.org/wiki/MD5") Move on to step 2 when you are sure you have an uncorrupted .dmg.
2. Download XQuartz. Despite what you may have read on the sites you've visited, X11 DOES NOT WORK with Gimp, or at least the aforementioned version of Gimp (built by linsanet). It's essentially an up-to-date version of X11, and doesn't suck as hard as Apple's does and it's a bit more compatible than Apple's version. You can download it here: "" You will have to log off and log back on when you install XQuartz to make sure it's set up properly.
3. Install Gimp.app into your Applications folder by dragging and dropping it. Then double-click it to run.
Please reply if this worked for you (or not), and change the topic name to reflect the state, i.e. "[SOLVED] HELP INSTALLING GIMP ON MAC".
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