After installing version 1.1 I get the following and my hudson instance is not working at all:

Status Code: 500

Exception:
Stacktrace:
java.lang.AssertionError: class hudson.plugins.templateproject.ProxyPublisher$DescriptorImpl must be assignable to class hudson.tasks.BuildStepDescriptor
at hudson.model.Descriptor.(Descriptor.java:235)
at hudson.plugins.templateproject.ProxyPublisher$DescriptorImpl.(ProxyPublisher.java:73)
at sun.reflect.GeneratedConstructorAccessor133.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at net.java.sezpoz.IndexItem.instance(IndexItem.java:149)
at hudson.ExtensionFinder$Sezpoz.findExtensions(ExtensionFinder.java:101)
at hudson.ExtensionList.load(ExtensionList.java:198)
at hudson.ExtensionList.ensureLoaded(ExtensionList.java:181)
at hudson.ExtensionList.iterator(ExtensionList.java:112)
at hudson.DescriptorExtensionList.load(DescriptorExtensionList.java:141)
at hudson.ExtensionList.ensureLoaded(ExtensionList.java:181)
at hudson.ExtensionList.iterator(ExtensionList.java:112)
at hudson.model.User.load(User.java:141)
at hudson.model.User.(User.java:112)
at hudson.model.User.get(User.java:278)
at hudson.security.HudsonPrivateSecurityRealm$HudsonUserDetailsService.loadUserByUsername(HudsonPrivateSecurityRealm.java:458)
at org.acegisecurity.ui.rememberme.TokenBasedRememberMeServices.loadUserDetails(TokenBasedRememberMeServices.java:308)
at org.acegisecurity.ui.rememberme.TokenBasedRememberMeServices.autoLogin(TokenBasedRememberMeServices.java:218)
at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:104)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244)
at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150)
at java.lang.Thread.run(Thread.java:619)

Generated by Winstone Servlet Engine v0.9.10 at Fri Feb 12 01:21:33 CET 2010