Eclipse Tigris plugin and built-in plugin

Apparently there is a conflict when you install Tigris plugin on top of Eclipse:

http://subclipse.tigris.org/servlets/ProjectProcess?pageID=p4wYuA

I click on "accept license" and it doesn't proceed.

If you remove these jars (put them in a directory different from C:\bea11\oepe_11gR1PS2\plugin), and you restart, Tigris allows you to proceed.

org.eclipse.team.svn.core.nl1_0.7.9.I20100512-1900.jar
org.eclipse.team.svn.core_0.7.9.I20100512-1900.jar
org.eclipse.team.svn.help_0.7.9.I20100512-1900.jar
org.eclipse.team.svn.nl1_0.7.9.I20100512-1900.jar
org.eclipse.team.svn.resource.ignore.rules.jdt_0.7.9.I20100512-1900.jar
org.eclipse.team.svn.revision.graph_0.7.9.I20100512-1900.jar
org.eclipse.team.svn.ui.nl1_0.7.9.I20100512-1900.jar
org.eclipse.team.svn.ui_0.7.9.I20100512-1900.jar
org.eclipse.team.svn_0.7.9.I20100512-1900.jar