Hi I have an i1 Pro Basic and am trying to linearise my alt prints made using digital negatives. I am on Windows 7. Sadly I am unable to get it to measure my printed testwedge. I tried disabling the xRite driver but the problem persists. I am getting the following error message, roughly: error opening usb port, config 1 failed. There is some mention of permissions. I apologise for this simple problem but I would like to get it running as I do not have access to any other software that can automatically read my chart. I plan to invert the correction curve and apply it in QuadtoneRIP, which I am using to print negatives, provided I can get at the coordinates of the curve, perhaps with an icc dump. Any help appreciated. Regards David