Several questions / errors

Hello.
I write from Canary Island, Spain. Sorry my English.
First I want to thank you for your work.
 
 
I have several quiestion and errors:
 
1) In Data Source, I add a OPC DA (KepServer) which is installed in a server. I can add tags manually and I watch the values in a "watch list", but when I push the button "Examinar Tags" nothing happens and in the file logs  "stdout_20141117.log" appears this error:
 
INFO  2014-11-17 13:22:19,486 (org.openscada.opc.lib.da.Server.connect:109) - Socket timeout: 0  
org.openscada.opc.lib.da.AddFailedException
at org.openscada.opc.lib.da.Group.addItems(Group.java:234)
at org.openscada.opc.lib.da.Group.addItem(Group.java:132)
at br.org.scadabr.OPCUtils.addItems(OPCUtils.java:96)
at br.org.scadabr.RealOPCMaster.browseOPCTags(RealOPCMaster.java:101)
at com.serotonin.mango.web.dwr.DataSourceEditDwr.listOPCTags(DataSourceEditDwr.java:2217)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.directwebremoting.impl.ExecuteAjaxFilter.doFilter(ExecuteAjaxFilter.java:34)
at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
at com.serotonin.mango.web.dwr.util.LoggedInAjaxFilter.doFilter(LoggedInAjaxFilter.java:39)
at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
at com.serotonin.web.dwr.LocalizationFilter.doFilter(LocalizationFilter.java:42)
at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
at com.serotonin.mango.web.filter.ExceptionDetectionFilter.doFilter(ExceptionDetectionFilter.java:40)
at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:431)
at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:283)
at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:52)
at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
at java.lang.Thread.run(Unknown Source)
 
 
 
 
2) In "ClienteJavaWeb", when I push in "Get Status" I get this error:  Error: Connection failed. Verify the API Address and username/password.
   The username and password are the same as ScadaBR website? 
 
 
 
 
3) In windows console, when I execute "java - jar watchdog.jar" I get this error:
 
log4j:WARN No appenders could be found for logger (org.quartz.simpl.SimpleThread
Pool).
log4j:WARN Please initialize the log4j system properly.
nov 17, 2014 1:50:31 PM br.org.scadabr.watchdog.Main main
INFORMACIËN: ScadaBR Watchdog Started
nov 17, 2014 1:50:31 PM br.org.scadabr.watchdog.Main main
INFORMACIËN: Period: 30
nov 17, 2014 1:50:32 PM org.apache.axis.utils.JavaUtils isAttachmentSupported
ADVERTENCIA: Unable to find required classes (javax.activation.DataHandler and j
avax.mail.internet.MimeMultipart). Attachment support is disabled.
nov 17, 2014 1:50:32 PM br.org.scadabr.watchdog.WatchDog execute
GRAVE: ScadaBR Failed
nov 17, 2014 1:50:32 PM br.org.scadabr.watchdog.WatchDog restartTomcat
GRAVE: Restarting Tomcat [1]
 
 
 
 
4)  In the "graphics" folder I have copied the "Dial" folder and renamed it to "Dial1". Also, I renamed the png image.  In the file "Info.txt" I have changed the name attribute (name=Dial1). After restart tomcat service, when I use the "Dial1" in graphics view I get this error: "cannot read property setvalue or undefined". 
Is it not possible to add new dynamic images, for example, other dials?
 
 
 
Best Regards.