I made a change to my Nabble account: tried to change my email address to a new one:
Old email: bogdanbivolaru hosted at gmail
New Email: bogdan.bivolaru hosted at yahoo UK
and I received the error below.
Afterwards I created a new account with the desired email and it works just fine.
However I still think I should report this error, I hope it may help you:
Error 500
invalid args: [email_old, email_new]
Message: invalid args: [email_old, email_new]
RequestURI: /user/ChangeEmail3.jtp
Server: n3.nabble.com
Caused by:
fschmidt.util.servlet.JtpContextServlet$JtpServletException: url=
http://dojo-toolkit.33424.n3.nabble.com/user/ChangeEmail3.jtp?email=bogdan.bivolaru%40yahoo.co.uk&h=-1319701269 method=GET user-agent=Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.3 (KHTML, like Gecko) Chrome/22.0.1220.0 Safari/537.3 referer=null remote=134.191.221.74
at fschmidt.util.servlet.JtpContextServlet.handleException(JtpContextServlet.java:558)
at fschmidt.util.servlet.JtpContextServlet.service2(JtpContextServlet.java:463)
at fschmidt.util.servlet.JtpContextServlet.service(JtpContextServlet.java:332)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1360)
at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:77)
at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:144)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)
at cachingfilter.CachingFilter.doFilter(CachingFilter.java:133)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)
at fschmidt.util.servlet.BadBotFilter.doFilter(BadBotFilter.java:74)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)
at fschmidt.util.servlet.ConnectionLimitFilter.doFilter(ConnectionLimitFilter.java:94)
at nabble.view.lib.NabbleConnectionLimitFilter.doFilter(NabbleConnectionLimitFilter.java:26)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)
at nabble.view.lib.NabbleErrorFilter.doFilter(NabbleErrorFilter.java:21)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)