Unsupported FS format when integrating subversion with STS (eclipse) [migrated]

Unsupported FS format when integrating subversion with STS (eclipse)
[migrated]

The error below is being displayed when I attempt to import a project into
SpringSource STS from SVN - (Checkout Projects from SVN).
Error validating location: "org.apache.subversion.javahl.ClientException:
Couldn't open a repository svn: Unable to connect to a repository at URL
'file:///C:/var/svn/repos' svn: Unable to open an ra_local session to URL
svn: Unable to open repository 'file:///C:/var/svn/repos' Unsupported FS
format svn: Expected FS format between '1' and '4'; found format '6'
I installed Subclipse - 1.8.x
version of STS - 2.9.2
Subversion (Collabnet) 1.8.1 was installed prior to installing subclipse
in the IDE.
C:\var\svn\repos>svn list file:///c:/var/svn/repos first.java
C:\var\svn\repos>svn --version svn, version 1.8.1 (r1503906) compiled Jul
19 2013, 00:29:10 on x86-microsoft-windows5.1.2600
Please can you inform me how to resolve this.
Thank you, S