The problem returned and here is the code for the page.

<apex:page controller="newOpportunity1Controller" tabStyle="New_Customer__tab" sidebar="false">
  <apex:sectionHeader title="New Customer Opportunity" subtitle="Step 1 of 2"/>
      <apex:form >
      <apex:pageBlock title="Customer Information" mode="edit">
        Below is minimum required information to create a new opportunity. In the account section, Please click the lookup icon to
        pick the existing customer or to create a new customer. Then there is five (5) fields required to create a new opportunity.
        The Stage will automatically set to Prospecting and Qualifying. After the completion of these fields, the second optional step is to add
        essential information about the company and opportunity.
        <apex:pageBlockButtons >
          <apex:commandButton action="{!step2}" value="Enter More Information"/>
          <apex:commandButton action="{!step3}" value="Confirm"/>
               </apex:pageBlockButtons>
     
      <apex:pageBlockSection title="Required Account Information" columns="1">
      <apex:inputHidden /><apex:inputHidden />
      </apex:pageBlockSection>
      <apex:pageBlockSection >
      <apex:inputField value="{!Opportunity.Account}" required="true"/>
     </apex:pageBlocksection>
     <apex:pageBlockSection title="Basic Contact Information" columns="2">
      <apex:inputField value="{!Contact.FirstName}" required="false"/>
      <apex:inputField value="{!Contact.LastName}"  required="false"/>
      <apex:inputField value="{!Contact.Email}"/>
      <apex:inputField value="{!Contact.Phone}"/>
      <apex:inputField value="{!Contact.HasOptedOutOfEmail}"/>     
     </apex:pageBlockSection>    
     <apex:pageBlockSection title="Required Opportunity Information">
      <apex:inputField value="{!Opportunity.Name}" required="true"/>
      <apex:inputField value="{!Opportunity.CurrencyIsoCode}" required="true"/>
      <apex:inputField value="{!Opportunity.CloseDate}" required="true"/>
      <apex:inputField value="{!Opportunity.Amount}" required="true"/>
      <apex:inputHidden />
      <apex:inputField value="{!Opportunity.Equip_Services_Options_to_be_quoted__c}" required="true"/>
     
           </apex:pageBlockSection>         
         </apex:pageBlock>
  </apex:form>

</apex:page>

and Here is the Controller

public class newOpportunity1Controller {
    public PageReference opptystep3() {
        return null;
    }

    public PageReference edit() {
        return null;
    }

    public PageReference opptystep2() {
        return null;
    }

    public PageReference opptystep1() {
        return null;
    }

    public PageReference save() {
        return null;
    }

    public String Account { get; set; }

    public String ManufacturingDesignSheet { get; set; }

    public PageReference step1() {
        return Page.opptyStep1;
    }

   // These four member variables maintain the state of the wizard.
   // When users enter data into the wizard, their input is stored
   // in these variables.
  
  
   Contact contact;
   Opportunity opportunity;
   OpportunityContactRole role;

   // The next four methods return one of each of the four member
   // variables. If this is the first time the method is called,
   // it creates an empty record for the variable.
   public Contact getContact() {
      if(contact == null) contact = new Contact();
      return contact;
   }

   public Opportunity getOpportunity() {
      if(opportunity == null) opportunity = new Opportunity();
      return opportunity;
   }

   public OpportunityContactRole getRole() {
      if(role == null) role = new OpportunityContactRole();
      return role;
   }
  
   // The next three methods control navigation through
   // the wizard. Each returns a PageReference for one of the three pages
   // in the wizard. Note that the redirect attribute does not need to
   // be set on the PageReference because the URL does not need to change
   // when users move from page to page.
   public PageReference ste1() {
      return Page.opptyStep1;
   }

   public PageReference step2() {
      return Page.opptyStep2;
   }

   public PageReference step3() {
      return Page.opptyStep3;
   }

   // This method performs the final save for all four objects, and
   // then navigates the user to the detail page for the new
   // opportunity.

}