I encountered the same problem. Lots of people have.
I currently run FH on Wineskin Winery, and it is very effective. It runs as if it was on Windows, and you can install textures/items/maps on it, all the goodies.
My tutorial has a bit more stuff to read than Moontwist's. So beware XD
The link to WW download:
http://wineskin.urgesoftware.com/tiki-index.php?page=Downloads-Once it's downloaded, you will have to download the Windows FH Setup.
-Open Wineskin Winery once FH has finished downloading. Click the + button at the bottom of the long, greyish box, beside the - button and above the "Wrapper Version" text.
-Once + is pressed, a window that reads "Add Engine" will appear. Select the latest version of Wineskin. The versions will look like this~ WS9Wine1.(Version Number) example: WS9Wine1.9.9.
-Click "Download and Install" and wait until it has finished.
-Once it has finished, the main Wineskin window will show. At the bottom, click "Create New Blank Wrapper".
-A small window named "Create a Wrapper" will appear. Name it "FeralHeart", and click OK.
-It will say "Wineskin Winery is currently busy, please wait."
-Once the wrapper is created, click "View Wrapper in Finder". You will see a little window, with "Wineskin" in it. Click that.
-This is where the FHSetup.exe is required. A small window with four options will appear. Select the "Install Software" option. Then click "Choose Setup Executable".
-Go to downloads and choose FHSetup.exe. Wait a tiny bit.
-Then the FH Setup Installation window will pop up.
-Then...you know what to do next xD
Also, when near the end of installation, select "Light" instead of "Full". That way FH will not crash as much.
Hope this helps!
Also, to install items and all them goodiez, right click FeralHeart once it's on desktop. Click "Show Package Contents". Click on drive_c and click FeralHeart. Them BLAMMO you're there with all them files xD