completely blank, no navigation or anything. The login works fine (with user/user), but then I just see a completely blank screen and an error pops up after a bit: "Call failed on the server. See server log for details". The server log is below.
I'm doing this on Windows 2008 RC2, with MDM 5.1.0. Same thing happens with MDM 5.0.2. I can deploy objects from TOS and everything seems to work fine.
Anyone have any ideas?

thanks!

Server log from login:


2012-05-15 00:29:41,660 ERROR [org.directwebremoting.util.LogErrorHandler] Line=2 Document root element "dwr", must match DOCTYPE root "null".
2012-05-15 00:29:41,660 ERROR [org.directwebremoting.util.LogErrorHandler] Line=2 Document is invalid: no grammar found.
2012-05-15 00:29:46,027 INFO  [org.talend.mdm.jaas.jboss.open.SimpleLoginModule] login() User 'user' successfully logged in Universe '[HEAD]'
2012-05-15 00:29:46,324 ERROR [STDERR] log4j:ERROR A "org.jboss.logging.appender.FileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
2012-05-15 00:29:46,324 ERROR [STDERR] log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
2012-05-15 00:29:46,324 ERROR [STDERR] log4j:ERROR [WebappClassLoader
  delegate: false
  repositories:
    /WEB-INF/classes/
----------> Parent Classloader:
java.net.FactoryURLClassLoader@2933092e
] whereas object of type
2012-05-15 00:29:46,324 ERROR [STDERR] log4j:ERROR "org.jboss.logging.appender.FileAppender" was loaded by [org.jboss.system.server.NoAnnotationURLClassLoader@afa7e74].
2012-05-15 00:29:46,324 ERROR [STDERR] log4j:ERROR Could not instantiate appender named "FILE".
2012-05-15 00:29:49,303 INFO  [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/core]] SessionListener: sessionCreated('7B1252236F3BD97705B682DCB0CDEE21')
2012-05-15 00:29:49,459 ERROR [org.directwebremoting.util.LogErrorHandler] Line=2 Document root element "dwr", must match DOCTYPE root "null".
2012-05-15 00:29:49,490 ERROR [org.directwebremoting.util.LogErrorHandler] Line=2 Document is invalid: no grammar found.
2012-05-15 00:30:13,059 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/general]] GeneralService: WARNING: Failed to get the SerializationPolicy '7584DE01C8F0B80DD0DE63BE884F428B' for module 'http://23.23.181.42:8080/general/general/'; a legacy, 1.3.3 compatible, serialization policy will be used.  You may experience SerializationExceptions as a result.
2012-05-15 00:30:13,262 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/general]] Exception while dispatching incoming RPC call
com.google.gwt.user.client.rpc.SerializationException: Type 'org.talend.mdm.webapp.general.model.UserBean' was not assignable to 'com.google.gwt.user.client.rpc.IsSerializable' and did not have a custom field serializer.For security purposes, this type will not be serialized.: instance = org.talend.mdm.webapp.general.model.UserBean@5443563e
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:610)
    at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:129)
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter$ValueWriter$8.write(ServerSerializationStreamWriter.java:152)
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeValue(ServerSerializationStreamWriter.java:534)
    at org.talend.mdm.webapp.general.gwt.GWTRPC.encodeResponse(GWTRPC.java:292)
    at org.talend.mdm.webapp.general.gwt.GWTRPC.encodeResponseForSuccess(GWTRPC.java:221)
    at org.talend.mdm.webapp.general.gwt.GWTRPC.invokeAndEncodeResponse(GWTRPC.java:253)
    at org.talend.mdm.webapp.general.gwt.ProxyGWTServiceImpl.doProcessCall(ProxyGWTServiceImpl.java:146)
    at org.talend.mdm.webapp.base.server.AbstractService.processCall(AbstractService.java:52)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:224)
    at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
    at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
    at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:420)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
    at java.lang.Thread.run(Thread.java:662)