Except as set forth on Schedule 4.4 hereof, each Credit Party has filed on or before their respective due dates or within the applicable grace periods, all United States federal, state, local and other tax returns which are required to be filed or has obtained extensions for filing such tax returns and is not delinquent in filing such returns in accordance with such extensions and has paid all material taxes which have become due pursuant to those returns or pursuant to any assessments received by any such Credit Party, as the case may be, to the extent such taxes have become due, except to the extent such taxes are being contested in good faith by appropriate proceedings diligently conducted and with respect to which adequate provision has been made on the books of such Credit Party as may be required by GAAP.