java.lang.ClassFormatError: Truncated class file ERROR

Hello,

I am getting below error when Initializing TeamCity server componenets on the Windows 2003 server.

'jetbrains.buildServer.SERVER - Error javax.servlet.ServletException: java.lang.ClassFormatError: Truncated class file while processing request: GET '/runtimeError.jsp', from client 127.0.0.1:1993, no auth/user, original page URL: /setupAdmin.html '

javax.servlet.ServletException: java.lang.ClassFormatError: Truncated class file
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:343)
at jetbrains.spring.web.TeamCityJSPServletImpl.access$001(TeamCityJSPServletImpl.java:8)
at jetbrains.spring.web.TeamCityJSPServletImpl$1.apply(TeamCityJSPServletImpl.java)
at jetbrains.buildServer.util.Util.doUnderContextClassLoader(Util.java:68)
at jetbrains.spring.web.TeamCityJSPServletImpl.service(TeamCityJSPServletImpl.java:4)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at jetbrains.spring.web.JspController.doHandle(JspController.java:17)
at jetbrains.buildServer.controllers.BaseController.handleRequestInternal(BaseController.java:73)

I just installed TeamCity on this windows server and this is the first time I am trying to open it from http://localhost.

Any ideas what might be causing it?

Your help will be gratly appreciated.

Thanks!