After upgrading the plugin from version v1.1 to v1.2 and restarting the jenkins instance I no longer see the copy link in the interface and find the following error in the logs:

WARNING: Failed to load hudson.plugins.copyProjectLink.CopyFolderActionFactory
java.lang.InstantiationException: /opt/jenkins/data/plugins/copy-project-link/WEB-INF/lib/classes.jar might need to be rebuilt: java.lang.ClassNotFoundException: hudson.plugins.copyProjectLink.CopyFolderActionFactory
at net.java.sezpoz.IndexItem.element(IndexItem.java:144)
at hudson.ExtensionFinder$GuiceFinder$SezpozModule.configure(ExtensionFinder.java:504)
at com.google.inject.AbstractModule.configure(AbstractModule.java:62)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:230)
at com.google.inject.spi.Elements.getElements(Elements.java:103)
at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:136)
at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:104)
at com.google.inject.internal.InjectorImpl.createChildInjector(InjectorImpl.java:230)
at hudson.ExtensionFinder$GuiceFinder.refresh(ExtensionFinder.java:336)
at jenkins.model.Jenkins.refreshExtensions(Jenkins.java:2154)
at hudson.PluginManager.dynamicLoad(PluginManager.java:431)
at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1313)
at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1116)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:104)
at java.lang.Thread.run(Thread.java:701)
Caused by: java.lang.ClassNotFoundException: hudson.plugins.copyProjectLink.CopyFolderActionFactory
at hudson.PluginManager$UberClassLoader.findClass(PluginManager.java:985)
at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at net.java.sezpoz.IndexItem.element(IndexItem.java:134)