CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Operating activities:
Net loss	$ (13,140)	$ (7,406)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation and modification expense	3,162	2,807
Net foreign currency remeasurement loss	0	124
Depreciation and amortization expense	214	213
Change in fair value of warrant liability	(981)	965
Modification of warrant liability	586	0
Gain/loss on sales of assets	5	0
Changes in operating assets and liabilities:
Accounts receivable	265	(825)
Prepaid expenses, deposits and other	37	(68)
Restricted cash	2	27
Accounts payable	433	(223)
Accrued liabilities	(232)	(24)
Other Non-current liability	100	0
Deferred revenue	(82)	977
Net cash used in operating activities	(9,630)	(3,433)
Investing activities:
Purchase of property and equipment	(119)	(234)
Proceeds from sale of fixed assets	5	0
Net cash used in investing activities	(114)	(234)
Financing activities:
Private placement financing, net of financing costs of $880k	11,220	0
Proceeds from Executive Note financing	2,000	0
Capital lease payments	(12)	0
Proceeds from exercise of options and warrants	2	21
Net cash provided by financing activities	13,210	21
Exchange rate effect on cash and cash equivalents	0	(24)
Increase (decrease) in cash and cash equivalents	3,466	(3,670)
Cash and cash equivalents, beginning of year	5,891	9,561
Cash and cash equivalents, end of year	9,357	5,891
Non-cash investing and financing activities:
Purchased equipment under capital lease	124	0
Conversion of executive note financing	2,000	0
Reclassification of warrant liability to equity	$ 1,616	$ 0