The svn-tag-plugin fails creating tags for module locations that have parameter references in their path,

e.g. svn://${base-url}/${branch}/${component}@${revision}

will fail since the svn-tag-plugin uses scm.getLocations() instead of passing in the AbstractBuild instance
so that module locations will be expanded correctly.

A provable patch would be to (@current master) apply the following change to SvnTagPlugin.java

99 SubversionSCM.ModuleLocation[] moduleLocations = scm.getLocations();

to

99 SubversionSCM.ModuleLocation[] moduleLocations = scm.getLocations(abstractBuild);