First check that you entered the correct URL of the repository in the Repository Browser view. Also check that a SVN server is running on the server machine specified in the repository URL and and is accepting connections from SVN clients. You can check that the SVN server accepts connections with the command line SVN client from CollabNet.

If you try to access the repository with a svn+ssh URL also check that a SSH server is running on port 22 on the server machine specified in the URL.

If the above conditions are checked and you cannot connect to the SVN repository please generate a logging file on your computer and send the logging file to <support@syncrosvnclient.com>. For generating a logging file you need to create a text file called log4j.properties in the install directory with the following content:

log4j.rootCategory= debug, R2

log4j.appender.R2=org.apache.log4j.RollingFileAppender
log4j.appender.R2.File=logging.log
log4j.appender.R2.MaxFileSize=12000KB
log4j.appender.R2.MaxBackupIndex=20
log4j.appender.R2.layout=org.apache.log4j.PatternLayout
log4j.appender.R2.layout.ConversionPattern=%r %p [ %t ] %c - %m%n

Restart the application, reproduce the error, close the application and send the file logging.log generated in the install directory to <support@syncrosvnclient.com>.