Hi All!  I am hoping you can help.  I created an apex class called newOpportunityController in my sandbox and when I tested it, everything worked fine. I then deployed it to my production environment and when I try to validate it get errors.  See  below for the code as well as the errors.  Any advice is greatly appreciated!

ERRORS RECEIVED: 
0 0 HomePageController.t1(), Details: System.NullPointerException: Attempt to de-reference a null object Class.HomePageController.t1: line 69, column 1
0 0 CMSForceSetupController.t1(), Details: System.AssertException: Assertion Failed: Expected: https://na1.salesforce.com/, Actual: https://na1.salesforce.com Class.CMSForceSetupController.t1: line 102, column 1

CODE USED:

public class newOpportunityController {

   // These four member variables maintain the state of the wizard.
   // When users enter data into the wizard, their input is stored
   // in these variables. 
   Account account;
   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 Account getAccount() {
      if(account == null) account = new Account();
      return account;
   }

   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 step1() {
      return Page.opptyStep1;
   }

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

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


   // This method cancels the wizard, and returns the user to the 
   // Opportunities tab
    public PageReference cancel() {
            PageReference opportunityPage = new ApexPages.StandardController(opportunity).view();
            opportunityPage.setRedirect(true);
            return opportunityPage; 
    }

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

      // Create the account. Before inserting, copy the contact's
      // phone number into the account phone number field.
      account.phone = contact.phone;
      insert account;

      // Create the contact. Before inserting, use the id field
      // that's created once the account is inserted to create
      // the relationship between the contact and the account.
      contact.accountId = account.id;
      insert contact;

      // Create the opportunity. Before inserting, create 
      // another relationship with the account.
      opportunity.accountId = account.id;
      insert opportunity;

      // Create the junction contact role between the opportunity
      // and the contact.
      role.opportunityId = opportunity.id;
      role.contactId = contact.id;
      insert role;

      // Finally, send the user to the detail page for 
      // the new opportunity.


      PageReference opptyPage = new ApexPages.StandardController(opportunity).view();
      opptyPage.setRedirect(true);

      return opptyPage;
   }

}