Software firm Imaginatik has lost a quarter of its value after warning full-year revenue will be "significantly" lower then expected due to the timing of certain contracts.The company said turnover for the year ending 31 March 2010 should still be marginally ahead of last year's £4.58m. It lost £647,000 in the six months to September on revenue of £2.27m.Continuing uncertainty over the timing of the closure of various ongoing contract discussions means the full impact on the full-year loss is not yet certain. Chief executive Mark Turrell looked on the positive side. "Whilst it is disappointing not to achieve the revenue forecast for the company in this financial year, our cash position remains comfortable, and we remain confident in the future prospects for Imaginatik and for the market place in which we operate," he said.