Hi There,
   I have a rich:file Upload in my page whenever i click on the add button iam getting an exception , which i pasted below , this is happening for every first file upload , please suggest me how to fix this ,Thanks in advance.

10:30:44,757 ERROR [[default]] Servlet.service() for servlet default threw exception
java.lang.NullPointerException: Colors cannot be null
        at java.awt.GradientPaint.<init>(GradientPaint.java:71)
        at org.richfaces.renderkit.html.images.ProgressBarAnimatedBg.paint(ProgressBarAnimatedBg.java:92)
        at org.ajax4jsf.resource.AnimationResource.send(AnimationResource.java:80)
        at org.ajax4jsf.resource.ResourceLifecycle.sendResource(ResourceLifecycle.java:221)
        at org.ajax4jsf.resource.ResourceLifecycle.send(ResourceLifecycle.java:157)
        at org.ajax4jsf.resource.InternetResourceService.load(InternetResourceService.java:333)
        at org.ajax4jsf.cache.LRUMapCache.load(LRUMapCache.java:116)
        at org.ajax4jsf.cache.LRUMapCache.get(LRUMapCache.java:87)
        at org.ajax4jsf.resource.InternetResourceService.serviceResource(InternetResourceService.java:195)
        at org.ajax4jsf.resource.InternetResourceService.serviceResource(InternetResourceService.java:141)
        at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:481)
        at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
        at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
        at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
        at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
        at java.lang.Thread.run(Thread.java:619)