Java.lang.Throwable: method getCause()Ljava/lang/Throwable; not found in web-App

Thanks for the answer, the problem is that for the first times that launch the application works in correct way in fact I see opened mine report to video, then stops to work and generates that error.

This error says:
- There is no method called "parseFloat" that receives a String as parameter in class java.lang.Float.
Look the method "parseFloat" at the class java.lang.Float!!

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    at com.sun.install.products.InstallComponent.performInstallation(InstallComponent.java:1457)
    at com.sun.install.products.Product.performInstallation(Product.java:651)
    at com.sun.install.tasks.ProductTask.perform(ProductTask.java:153)
    at com.sun.wizards.core.Sequence.perform(Sequence.java:343)
    at com.sun.wizards.core.SequenceManager.run(SequenceManager.java:226)
    at java.lang.Thread.run(Thread.java:595)
    Error in executing command : /opt/sun/portal/bin/psconfig --unconfig /tmp/psunconfig_bla.bla_114286064037648246.xml
    --------------50%-----------------75%--------------100%|
    Installation Failed
    No software was installed.

    at the installation log file containing these:
    Installation Log
    Installing Java Enterprise System
    Log file: /var/opt/sun/install/logs/Java_Enterprise_System_install.
    B03201513
    Installed: /var/sadm/prod/sun-ps7_0-
    entsys/uninstall_Sun_Java_tm__Enterprise_System_2005Q4.class
    Uninstaller is at: /var/sadm/prod/sun-ps7_0-
    entsys/uninstall_Sun_Java_tm__Enterprise_System_2005Q4.class
    OrionUninstallersun-ps7_0-entsys
    Installing RPM: sun-ps7_0-entsys
    RPM sun-ps7_0-entsys successfully installed.
    Installing RPM: sun-ps7_0-entsys-l10n
    error: ../Product/entsys/Packages/sun-ps7_0-entsys-l10n-4.0-1.i386.rpm: MD5
    digest: BAD Expected(50518d27bb86729827e12611f261333a) !=
    (9bff1755f96e04bebe270aa64f9d9d4c)
    error: ../Product/entsys/Packages/sun-ps7_0-entsys-l10n-4.0-1.i386.rpm cannot
    be installed
    Error: RPM sun-ps7_0-entsys-l10n install failed}.
    Install complete. Package: sun-ps7_0-entsys-l10n
    rpm: Skipping rpm remove of sun-ps7_0-entsys-l10n, not installed.
    rpm: Skipping rpm remove of sun-portal-search, not installed.
    rpm: Skipping rpm remove of sun-portal-portlets, not installed.
    rpm: Skipping rpm remove of sun-portal-base, not installed.
    rpm: Skipping rpm remove of sun-portal-admin, not installed.
    Installing RPM: sun-mobileaccess-config
    package sun-mobileaccess-config-1.0-25 is already installed
    Error: RPM sun-mobileaccess-config install failed}.
    Install complete. Package: sun-mobileaccess-config

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