I tried what you suggested. Before I describe what happened, let me explain that I already have set system preferences, Security & Privacy, to allow apps downloaded from anywhere. With that said, here's what happened when I followed your instructions. The app opened, but not actually. That is, the bar at the top of the screen says GIMP, but the bar is grayed back. When I click on 'file' it does provide a drop down menu. Then I try to open a new project and nothing happens. So that is where it stands right now. I have also tried to open the app by double clicking on a file that was created in GIMP, but it will not launch the program.

I know this must all sound very confusing. I have been using Macs for about 25 years and I have never experienced anything like this.

Thanks for your help.


On 8/17/15 12:16 PM, Pat David wrote:
So, Yosemite has a "feature" that will automatically _not_ run apps that are from an 'unidentified' developer. This is _possibly_ what's happening here.


So let's try this first:

Using Finder, go to where you have the app (Applications folder). Use Finder, not Launcher to get there. Hold "Control" and click on the app icon, and choose "Open" from the shortcut menu. That should set the app as a exclusion to this policy. The app _should_ open now.

Try that and report back.

On Mon, Aug 17, 2015 at 11:10 AM Peter Giardina <pjgiard...@hargray.com <mailto:pjgiard...@hargray.com>> wrote:

    I understand that you want to pick one install, but let me explain
    what is happening.

    I first tried to use the install by Simone Karin Lehmann at
    lisanet.de <http://lisanet.de>, because of the add-ons. However,
    when I click on 'download' it goes to SourceForge. I have read
    what was written about SourceForge on your site so that doesn't
    seem like a good option.

    When I click on _Download GIMP 2.8 from gimp.org
    <http://gimp.org>_ for the torrent install, I receive the
    following file:
    (7 KB). When I try to open this link I get this message: Safari
    can’t open the file “gimp-2.8.14.dmg-4.torrent” because no
    available application can open it.

    So then I am left with clicking on: "If the torrent download
    doesn't work, you can also follow _this link_." Clicking on 'this
    link' does download the following file: gimp-2.8.14.dmg. I then
    open this file and it produces a file called, GIMP.app. I then
    drag that file into the Applications folder, and double click the
    icon to open the app. Instead of the app being opened, nothing

    So, where do we go from here?

    On 8/17/15 11:21 AM, Pat David wrote:
    Just putting this back on the user list for visibility (please
    remember to "reply all" to make sure it gets to everyone).

    So, which one are you downloading to attempt to install?  Let's
    pick a single one to keep things simple for the moment.

    When you get the .dmg file, can you drag the app into a simple
    location, like your desktop?  Then try to launch the app from
    there.  What happens when you try to launch it?

    On Mon, Aug 17, 2015 at 10:18 AM Peter Giardina
    <pjgiard...@hargray.com <mailto:pjgiard...@hargray.com>> wrote:

        Hi, Pat!

        Thank you for your response. I'll try to answer your questions.

        I am attempting to install by going to gimp.org
        <http://gimp.org> and then clicking on the orange 'download'
        button. I then clicked on the following links on the
        'downloads' page.

                Native builds

                Currently there are two main installers:

                A GIMP 2.8 DMG installer by Sven Claussner, stock
                GIMP build without any add-ons. It works on OS X 10.6
                Snow Leopard and later. Just open the downloaded DMG
                and drag and drop GIMP into your "Applications" folder.

                Download GIMP 2.8 from gimp.org <http://gimp.org> .
                If the torrent download doesn't work, you can also
                follow this link.
                A build by Simone Karin Lehmann, with some extra
                plug-ins and changes.

                Download GIMP 2.8 from lisanet.de <http://lisanet.de>

        On one occasion, I thought I had downloaded the program
        successfully, but after it was opened it would not respond,
        i.e. I could not open a new project. Since it was not working
        properly, I have uninstalled the program.

        I am not seeing any error messages while trying to install.

        I am still running OS X Yosemite, version 10.10.4.

        I do not recall which install was on the computer before.

        I hope this helps. If necessary, I will try to provide any
        other additional information.

        Thanks for your help,


        On 8/17/15 11:01 AM, Pat David wrote:
        Hi Peter!

        It's hard for us to diagnose how best to help you without
        more information.

        How are you attempting to re-install it, and what is
        happening that is preventing it from working?
        What, if any, error are you seeing while trying to install?
        Are you still on OSX Yosemite?  If not, which version?

        Which install did you previously have on your machine?

        On Mon, Aug 17, 2015 at 9:56 AM Peter Giardina
        <pjgiard...@hargray.com <mailto:pjgiard...@hargray.com>> wrote:

            I previously had GIMP installed on my Mac (OS X
            Yosemite, version
            10.10.4) and it was running perfectly. However, due to a
            set of
            circumstances with the Mac (I don't believe they were
            related to GIMP)
            the program began running poorly, if at all. I then
            uninstalled GIMP and
            attempted to reinstall it. However, I have not been able
            to do so. Also,
            since uninstalling GIMP, the problem with the computer
            has been fixed. I
            have tried both installers recommended on the
            'downloads' page of your site.

            Please help with how I can successfully install GIMP. I
            like this
            program a lot, and would like to be able to continue
            using it.

            Thanks for your help,

            Peter Giardina

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