Obtaining PschToolBox on mac

I'm having problems obtaining PsychToolBox on the mac.

I'm using matlab student version 7.0.0.19901 (r14).

I'm running an IMAC G5 with mac os x version 10.4.9

The message I get is

I've tried psychtoolbox('stable') and the other variations suggested
by the Psychtoolbox instructions.

If anyone can help I'd be hugeley greatful.

dan



EDU>> DownloadPsychtoolbox('current')
DownloadPsychtoolbox('beta','/Applications')
Requested flavor is: beta
Requested location for the Psychtoolbox folder is inside: /Applications

Will use the svn client which is located in this folder: /usr/local/bin/
Good. Your privileges suffice for the requested installation into
folder /Applications.

I will now download the latest Psychtoolbox for OSX.
Requested flavor is: beta
Target folder for installation: /Applications
The following CHECKOUT command asks the Subversion client to
download the Psychtoolbox:
/usr/local/bin/svn checkout
svn://svn.berlios.de/osxptb/beta/Psychtoolbox/ /Applications/Psychtoolbox
Downloading. It's nearly 100 MB, which can take many minutes.
Alas there is no output to this window to indicate progress until the
download is complete.
Please be patient ...
Command "CHECKOUT" failed with error code 1:
svn: Can't connect to host 'svn.berlios.de': Operation timed out


Will retry now by use of alternative http protocol...
The following alternative CHECKOUT command asks the Subversion client to
download the Psychtoolbox:
/usr/local/bin/svn checkout
http://svn.berlios.de/svnroot/repos/osxptb/beta/Psychtoolbox/
/Applications/Psychtoolbox

Sorry, the download command "CHECKOUT" failed with error code 1:
svn: PROPFIND request failed on '/svnroot/repos/osxptb/beta/Psychtoolbox'
svn: PROPFIND of '/svnroot/repos/osxptb/beta/Psychtoolbox': could not
connect to server (http://svn.berlios.de)

The download failure might be due to temporary network or server
problems. You may want to try again in a
few minutes. It could also be that the subversion client was not
(properly) installed. On Microsoft
Windows you will need to exit and restart Matlab after installation of
the Subversion client. If that
does not help, you will need to reboot your machine before proceeding.
??? Error using ==> DownloadPsychtoolbox
Download failed.