atg.servlet.DynamoHttpServletRequest cannot be cast to atg.servlet.DynamoHttpServletRequest

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I am always getting the below Exception when i deploy
any modifications in my Project using runAssembler.bat,
this issue occurs only when the  Jboss Server
is running while deploying the changes.

java.lang.ClassCastException: atg.servlet.DynamoHttpServletRequest cannot be cast to atg.servlet.DynamoHttpServletRequest
    at atg.servlet.DynamoServlet.service(DynamoServlet.java:126)
    at atg.taglib.dspjsp.DropletTag.invokeServlet(DropletTag.java:377)
    at atg.taglib.dspjsp.DropletTag.doAfterBody(DropletTag.java:666)
    at org.apache.jsp.en.catalog.share_jsp._jspService(share_jsp.java:291)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java

As per me the fix is stop the Server,Clean and Start again.Its working :),otherwise stop the Server before deploying and start again.But this behaviour can be changed from the Scripts also.
See modifications in Scripts as well.

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