I'd really like to try out Zimbra, especially for shared calendar hosting, but I can't get past the demo signup.

Here's the error page I got when signing up for a 2 week demo trial of Zimbra Collaboration Server. Live demos of Zimbra's open source email and group calendar software

I got this after filling out the form, putting in the character validation stuff, and hitting return...used both Google Chrome and IE 10 on Windows 8.

HTTP ERROR 500

Problem accessing /zimbraDemo/public/CaptchaServlet. Reason:

INTERNAL_SERVER_ERROR
Caused by:

java.lang.NullPointerException
at com.zimbra.cs.account.soap.SoapProvisioning.setPas sword(SoapProvisioning.java:968)
at com.zimbra.zdemo.util.GenerateUser.doPost(Generate User.java:189)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(Ser vletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler.handle(Se rvletHandler.java:390)
at org.mortbay.jetty.security.SecurityHandler.handle( SecurityHandler.java:218)
at org.mortbay.jetty.servlet.SessionHandler.handle(Se ssionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(Co ntextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebA ppContext.java:422)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispa tcher.java:330)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispa tcher.java:126)
at com.zimbra.zdemo.captcha.CaptchaServlet.doPost(Cap tchaServlet.java:118)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(Ser vletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler.handle(Se rvletHandler.java:390)
at org.mortbay.jetty.security.SecurityHandler.handle( SecurityHandler.java:218)
at org.mortbay.jetty.servlet.SessionHandler.handle(Se ssionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(Co ntextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebA ppContext.java:422)
at org.mortbay.jetty.handler.ContextHandlerCollection .handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle (HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.handler.rewrite.RewriteHandler.h andle(RewriteHandler.java:230)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.handler.DebugHandler.handle(Debu gHandler.java:77)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(Htt pConnection.java:543)
at org.mortbay.jetty.HttpConnection$RequestHandler.co ntent(HttpConnection.java:946)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:756)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpPa rser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnec tion.java:405)
at org.mortbay.io.nio.SelectChannelEndPoint.run(Selec tChannelEndPoint.java:410)
at org.mortbay.thread.BoundedThreadPool$PoolThread.ru n(BoundedThreadPool.java:451)
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