JAR resources in JNLP file are not signed by same certificate

Edit Subject

When open client program, I got error "JAR resources in JNLP file are not signed by same certificate"

JNLPException[category: Launch File Error : Exception: null : LaunchDesc:

ScrumWorks Basic Client
ScrumWorks, LLC.

ScrumWorks Basic - Unleash Team Self-Organization
ScrumWorks Basic Application

]
at com.sun.javaws.LaunchDownload.checkSignedResourcesHelper(Unknown Source)
at com.sun.javaws.LaunchDownload.checkSignedResources(Unknown Source)
at com.sun.javaws.Launcher.prepareLaunchFile(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.launch(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)