After installing an updated version of SCM Api plugin (version 2.0.3) branch indexing has stopped working with the following error:

java.lang.NoSuchMethodError: jenkins.branch.MultiBranchProject.getRootDirFor(Lhudson/model/Job;)Ljava/io/File;
at com.github.mjdetullio.jenkins.plugins.multibranch.TemplateDrivenMultiBranchProject.getRootDirFor(TemplateDrivenMultiBranchProject.java:306)
at com.github.mjdetullio.jenkins.plugins.multibranch.TemplateDrivenMultiBranchProject.getRootDirFor(TemplateDrivenMultiBranchProject.java:89)
at hudson.model.AbstractItem.getRootDir(AbstractItem.java:177)
at hudson.model.Items.getConfigFile(Items.java:387)
at hudson.model.AbstractItem.getConfigFile(AbstractItem.java:508)
at hudson.model.AbstractItem.save(AbstractItem.java:503)
at hudson.model.Job.save(Job.java:186)
at hudson.model.AbstractProject.save(AbstractProject.java:306)
at hudson.BulkChange.commit(BulkChange.java:98)
at com.github.mjdetullio.jenkins.plugins.multibranch.TemplateDrivenBranchProjectFactory.setBranch(TemplateDrivenBranchProjectFactory.java:104)
at com.github.mjdetullio.jenkins.plugins.multibranch.FreeStyleBranchProjectFactory.newInstance(FreeStyleBranchProjectFactory.java:55)
at com.github.mjdetullio.jenkins.plugins.multibranch.FreeStyleBranchProjectFactory.newInstance(FreeStyleBranchProjectFactory.java:38)
at jenkins.branch.MultiBranchProject$SCMHeadObserverImpl.observe(MultiBranchProject.java:1972)
at jenkins.scm.impl.subversion.SubversionSCMSource.fetch(SubversionSCMSource.java:404)
at jenkins.scm.impl.subversion.SubversionSCMSource.fetch(SubversionSCMSource.java:412)
at jenkins.scm.impl.subversion.SubversionSCMSource.retrieve(SubversionSCMSource.java:240)
at jenkins.scm.api.SCMSource._retrieve(SCMSource.java:316)
at jenkins.scm.api.SCMSource.fetch(SCMSource.java:210)
at jenkins.branch.MultiBranchProject.computeChildren(MultiBranchProject.java:634)
at com.cloudbees.hudson.plugins.folder.computed.ComputedFolder.updateChildren(ComputedFolder.java:219)
at com.cloudbees.hudson.plugins.folder.computed.FolderComputation.run(FolderComputation.java:141)
at jenkins.branch.MultiBranchProject$BranchIndexing.run(MultiBranchProject.java:965)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:405)

An existing multibranch project is not loaded