I’m unable to scroll through the various boxes such as the vehicle list. When lists of road vehicles, or trains or trams start to spill out of box and need to be scrolled, I have to use the Visible button to see them. Assigning new vehicles to old lines can be a problem to because I can’t scroll through to any line named from the middle to the end of the alphabet once there are lots of lines. I can keep going by changing line names temporarily to the beginning of the alphabet, but it’s becoming a pain. Sometimes vehicle list scrolls to the end, but it seems to happen by accident and I can’t reproduce it. I’m using a Lenovo laptop with Intel 2 x 2+Ghz processors and an Intel graphics card. Help!