Visualforce redirect error "Cyclical server-side forwards detected"

Question

On my Opportunity object, I have one Record Type that I am looking to redirect to a custom Visualforce Page & Controller. The other Opportunity Record Types can stay defaulted to the standard page layouts.

I have overriden the Opportunity New Button with the Visualforce below which calls my custom controller.

I receive "Cyclical server-side forwards detected" error when testing.

Any ideas what I am doing wrong?

Visualforce:

<apex:page standardController="Opportunity" extensions="SSPNewOpptyRedirect" 
action="{!continueNextPage}">

Apex Class:

public class SSPNewOpptyRedirect {

Opportunity oppty {get; set;}
Id recordTypeA;

public SSPNewOpptyRedirect(ApexPages.StandardController stdController) {
    oppty = (Opportunity)stdController.getRecord();

    recordTypeA = [SELECT Id
                   FROM RecordType
                   WHERE SObjectType = 'Opportunity' AND DeveloperName = 'New_Supply_Side_Platform' LIMIT 1].Id;                                 

}   

public PageReference continueNextPage() {
    PageReference newPage;

    //newPage = Page.SSPOpportunityEdit;
    newPage = new PageReference('/apex/SSPOpportunityEdit');

    if (Oppty.RecordTypeId != recordTypeA)
    {
        String retUrl = '006/e';
        newPage = new PageReference('/' + retUrl);
    }

    if (ApexPages.currentPage().getParameters().get('RecordType') != null) {
        newPage.getParameters().put('RecordType', ApexPages.currentPage().getParameters().get('RecordType'));
    }

    if (ApexPages.currentPage().getParameters().get('retURL') != null) {
        newPage.getParameters().put('retURL', ApexPages.currentPage().getParameters().get('retURL'));
    }

    if (ApexPages.currentPage().getParameters().get('ent') != null) {
        newPage.getParameters().put('ent', ApexPages.currentPage().getParameters().get('ent'));
    }

    newPage.getParameters().put('nooverride', '0');

    return newPage;
}
}

Answer 1

Your page has gone in to an infinite loop. You need to set 'nooverride' to '1' to break the loop:

newPage.getParameters().put('nooverride', '1');