I have a spring 3.1 portlet which works perfectly in liferay and websphere 7... When I update spring to 3.2(no spring 3.1 libraries exist anymore) the portlet no longer works completely in websphere, but works perfectly fine in liferay.

In websphere I can bring up the initial page of the portlet, the problem is when I submit the form I get the error below

Error 404: SRVE0190E: File not found: /wps/myportal/!ut/p/b1/04_SjzQyNjI3MrSwMNeP0I_KSyzLTE8syczPS8wB8aPM4oPDfE 1CnAJNDd2NfJwNPM0twkI9jByNDAzMgAoikRX4uwe6GHi6hgWa uXmEGLr7GVGm39mYOP0GOICjASH94fpRqEqw-ACvgmBzAgpAfgArwONIP4_83FT93KgcNzdLz8yAdEVFALgB75o !/pw/Z7_SVM4TBQ518M2F0I7Q6H7S62006/ren/p=submit=submit/-/

It does not look like the request even hits spring, no exceptions are produced from my app.

A cut down version of my code is below

Code:
@Controller("titleSearchController")
@RequestMapping("VIEW")
public class TitleSearchController {
    ...

    // THIS WORKS FINE
    @RenderMapping(params = "reset=true")
    public String showIndexPage(Model model) throws Exception {
    	return "home"; 
    }
    
    @RenderMapping(params="submit")
    public String submitForm(@ModelAttribute("command") LandTitleCriteria landtilecriteria, BindingResult bindingResult, WebRequest request, Model model) throws Exception {
		model.addAttribute("command", landtilecriteria);
		....
		return "home";
	}

    ...
}
cut down verion of the JSP
HTML Code:
<portlet:renderURL var="go">
	<portlet:param name="submit" value="submit"></portlet:param>
</portlet:renderURL>

<form:form id="form" class="form-horizontal" commandName="command" action="${go}" onsubmit="return SubmitForm()" htmlEscape="false">
...
</form:form>

Any ideas why I get the error?