You have to refer to the conversion features, and warrant valuation. The lender(s) have no way out given the conversion feature, thus, demand for payment. Refer again:
On May 16, 2010, an addendum was signed whereby the Company paid the Lender an extension fee of USD$10,000.00 on signing and a further USD$10,000 on the due date, October 15, 2010. The loan conversion featured was also modified such that any outstanding principal sum is convertible into units at $0.10 each (maximum 4,000,000 units), each unit consisting of one fully paid common share and one share purchase warrant exercisable within two years at USD$0.15 per share.