Exhibit
      10.50

    Capital
      Contribution Agreement

    


    This
      Agreement is made as of the 4 day of June, 2008 by and between Rentar Logic,
      Inc., a Delaware corporation (“Rentar Logic”), Rentar Environmental Solutions,
      Inc., a Delaware corporation (“Rentar”), and NuState Energy Holdings, Inc., a
      Nevada corporation (“NuState”) (collectively the “Parties”).

    


    WHEREAS
      Rentar Logic, Rentar, and NuState entered into that certain April 10, 2008
      Software Transaction Agreement;

    


    WHEREAS,
      the Parties wish to provide for certain aspects of the Capital Contributions
      referred to in the April 10, 2008 Software Transaction Agreement executed by
      Rentar Logic;

    


    NOW
      THEREFORE, it is agreed that:

    


    Contribution
      Account. 
      (a.)
      Rentar Logic shall maintain a capital account for each of Rentar and of NuState
      which shall account for the US$18,000 per month cash capital contribution made
      by Rentar pursuant to Paragraph 2 of the “Financial Contributions to Newco”
Section in the April 10, 2008 Software Transaction Agreement and by NuState
      pursuant to Paragraph 3 of the “Financial Contributions to Newco” Section in the
      April 10, 2008 Software Transaction Agreement, (collectively, the “US$18,000
      Monthly Obligations”).

    


    (b.)
      Capital raised during any month will first be applied proportionately against
      Rentar’s and/or NuState’s US$18,000 Monthly Obligations.

    


    (c.)
      If
      sufficient Capital is not raised during any month and Rentar pays all or part
      of
      NuState’s US$18,000 Monthly Obligation for any month on NuState’s behalf
      (“Rentar’s Payment on Behalf of NuState”) , the then outstanding balance of the
      US$3,000,000 payment obligation referenced in the “Intellectual Property
      Transferred to Newco” section of the pursuant to Paragraph 2 of the “Financial
      Contributions to Newco” Section of the April 10, 2008 Software Transaction
      Agreement shall be reduced by the amount of Rentar’s Payment on Behalf of
      NuState.

    


    (d.)
      Once
      the outstanding obligation balance of the US$3,000,000 payment obligation
      referenced in the “Intellectual Property Transferred to Newco” section of the
      April 10, 2008 Software Transaction Agreement is paid in full, any and all
      funds
      advanced by Rentar to Rentar Logic shall be loans payable to Rentar on terms
      agreed to by the Parties.

    


    IN
      WITNESS WHEREOF, the parties hereto have executed this binding Agreement as
      of
      the day and year first above written.

    


    
      	
              WITNESSES

            	 	
              Rentar
                Logic, Inc., a Delaware corporation

            
	
              /s/
                Richard Hersh

            	 	
              By:
                

            	
              /s/
                Joel Ratner

            
	
              /s/
                Richard Warner

            	 	
              Authorized
                Representative

            
	 	 	 	 
	
              /s/
                Richard Hersh

            	 	
              By:
                

            	
              /s/
                Frank Reilly

            
	
              /s/
                Richard Warner

            	 	
              Shareholder:
                NuState Energy Holdings, Inc. 

            
	 	 	
              By:

            	
              Frank
                Reilly

            
	 	 	 	 
	
              /s/
                Richard Hersh

            	 	
              By:
                

            	
              /s/
                Joel Ratner

            
	
              /s/
                Richard Warner 

            	 	
              Shareholder:
                Rentar Environmental Solutions, Inc.

            
	 	 	
              By:
                

            	
              Joel
                Ratner