I've just purchased TI2009 upgrade. I had V11 previously. When I tried to install, the serial number box came up. The serial supplied with the upgrade is 64 characters long. The serial number box only accepts 28 characters. I have now uninstalled V11 but this makes no difference. This must be something with my machine because obviosly Acronius would have tested its software. But I can't think what the problem is. Meantime, I have no backup in place. Any ideas, anyone? Quickly please!