Each Loan Party has timely filed or caused to be filed all tax returns and reports required to have been filed and has paid or caused to be paid all Taxes required to have been paid by it, except (a) Taxes that are being contested in good faith by appropriate proceedings, for which such Loan Party has set aside on its books adequate reserves in accordance with GAAP, and as to which no Lien has arisen or (b) to the extent that the failure to do so would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect.