Shares in Escher shed 10 per cent on disappointment that it no longer expected to recognise a hefty licence payment before the year-end. The postal software provider said it had pushed back its estimate of when it would recognise the licence revenue from a customer from the fourth quarter to the first half of 2013. It said that while it had delivered the software to the customer it didn't think the customer would have deployed it to enough workstations to trigger the full license payment by the year-end. "As a result, Escher believes it will not be in a position to recognise approximately $6m of licence revenue until the first half of 2014," the company said.Chief Executive Officer Liam Church said the rest of the business was trading in line with expectations. Shares in Escher had fallen 10.4% to 257.5p at 15:33 on Friday.TB