Hi Gerry and all,I have been using PCStage since 2011 at my local village hall which was upgraded in 2010 with Lottery money. When I joined in 2008 it had 18 strand dimmers operated by a 2 scene preset DMX board, 4 strand patt 123's and 2 strand patt 23's. The main lighting on stage was 6 150watt domestic lights. I was asked to advise about re-equiping the hall and asked for another 2 six channel dimmer packs this brought the total to 30, a 30 way patch panel, 10 way F.O.H. bar, 10 way No1 (on stage) bar, 6 way No2 bar, 3way Cyc. batten and double 1 way dip trap. They also installed a new four speaker PA system as well as wired comms between stage and lighting box. I used PCStage with my Vista laptop for several years until my local drama group decided to invest in a re-conditioned desk top computer. This had Windows 7 installed and PCStage seemed to work ok. Unfortunately two years ago it packed up and we discussed replacing it. Then Covid happened and the hall was shut down. I took this opportunity to buy another re-conditioned desk top which came with Windows 7 64Bit. PCStage seemed to load ok and ran, but as soon as I connected the PCStage box via its USB cable to the computer all the stage lights came full on, which was a bit of a shock. For the last year I have been trying to find a solution to this problem. At the moment both David Buckley and Gerry have been trying to help me solve it. As far as I can tell from the computer messages the box is working correctly. It seems to be a problem with installing the driver files, which I have been unable to solve at this time. I have been considering buying another cheap computer running only Windows XP 32Bit.Wayne