I am constantly getting this error when working with eclispe and the subclipse plugin:
Unable to load default SVN Client
I have already install
I have a similar problem with Subclipse 1.8. Due to licenses limitations, SVN client aren't bundled with SVN any more. So I find the message "Unable to load default SVN Client".
My solutions is to install SVN client. It can't be easier. Go to Eclispe Marketplace, type Subclipse and click to install Subclipse again, select all options. When restarting Eclipse, it will prompt us to install an SVN client, choose SVNKit or JavaHL (I choose JavaHL). After restarting one more time, it all works.
For ubuntu 12.04 amd64
sudo apt-get install libsvn-java
add this to eclipse.ini after -vmargs:
-vmargs
-Djava.library.path=/usr/lib/jni:/usr/lib/x86_64-linux-gnu/jni
...