Hello,
What version of Syncro SVN Client are you using?
We have tested Syncro SVN Client 9.0 with OS X 10.9 (Mavericks) and it works as expected. For the
Syncro SVN Client.app to start, Java SE 6 from Apple is required to be installed.
When you start the .app, the system detects that the application requires Java SE 6 and if it is not already installed, it prompts you to install it.
If this doesn't happen for you, you can manually install the Java SE 6 distribution available from Apple:
http://support.apple.com/kb/DL1572The same Java SE 6 package is used by OS X 10.7, 10.8 and 10.9.
Note that Java SE 7 from Oracle is not recognized or supported by the .app at this time (Syncro SVN Client 9.0).
Regards,
Adrian