Here\'s what I did; sorry, my steps require that you use the command-line. It may not work, but it did for me.
ok, try this:
1)Download the .dmg, and drop the folder inside into applications.
- if it\'s not in applications, then the following steps will have to be modified with the correct path to where the folder is.
2)Open up a terminal (located in /Applications/Utillities
3) type in \"ls /usr/local\" without the quotes.
- alsong as you don\'t get a message about the file not existing, you are fine, even if there is no folders listed in the output
4) Depending on what softwear you have installed, you may need to create the folder \'lib\' in /usr/local. If you see \'lib\' displayed after you typed in step #3, then you already have it. (if you have lib, skip to step 6)
- if lib wasn\'t listed, you will need to make it (see next step)
5) Create the directory lib with the command \"sudo mkdir /usr/local/lib\"
- you will be prompted for a password, enter your osx log-in password here. If it fails, use the password for the computers system administrator acount.
6) now, move the problematic file to /usr/local/lib with the command \"sudo mv /Applications/PlaneShift\\ 3D/psclient.app/Contents/Resources/libcal3d.10.dylib /usr/local/lib\"
- If prompted for password again, re-enter it.
7) you can now quit the terminal application, and run planeshift