Hi again Simon,
ok, I'll try to describe the problem more detailed.
First of all my project directory looks like this:

Header:

Sources:

And Makefiles:

After Starting Codebench and loading the project I'm asked to get files new (which I always deny since local files are newer):

Here you can see my plugin settings inside the project settings:

When opening the synchronize view (which does not work BTW when only using svn.plugin) nothing is recognized as within the repository as you can see here:

here:

and here:

Unfortunately I cannot enter any repository information inside this dialog (as described in help):

The svn command is configured like the following:

When just typing svn -help in shell I get the following:

When typing svn info inside my project dir I get this output:

Hope this makes it all more clear. Question now is what can I do in order to use the full svn integration with my project inside Codebench?
Many thanks in advance and
Best Regards