Subversion Repositories SoapBoxCore

Error running this command: svn --non-interactive --config-dir /tmp log --xml --verbose --username '***' --password '***' -r 15:1 'http://svn.soapboxcore.com/svn/trunk/SoapBox/SoapBox.Core/SoapBox.Core.Contracts/Gui/ViewModel/NotifyPropertyChangedHelper.cs@15' --limit 2
svn: '/svn/!svn/bc/15/trunk/SoapBox/SoapBox.Core/SoapBox.Core.Contracts/Gui/ViewModel/NotifyPropertyChangedHelper.cs' path not found