i figured out what was the problem: if you specify: [Metrics] IconMetrics=76 0 0 0 75 0 0 0 75 0 0 0 1 0 0 0 245 255 255 255 0 0 0 0 0 0 0 0 0 0 0 0 144 1 0 0 0 0 0 1 0 0 0 0 84 97 104 111 109 97 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 NonclientMetrics=84 1 0 0 1 0 0 0 13 0 0 0 13 0 0 0 18 0 0 0 21 0 0 0 245 255 255 255 0 0 0 0 0 0 0 0 0 0 0 0 188 2 0 0 0 0 0 1 0 0 0 0 84 97 104 111 109 97 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 17 0 0 0 245 255 255 255 0 0 0 0 0 0 0 0 0 0 0 0 188 2 0 0 0 0 0 1 0 0 0 0 84 97 104 111 109 97 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 19 0 0 0 19 0 0 0 245 255 255 255 0 0 0 0 0 0 0 0 0 0 0 0 144 1 0 0 0 0 0 1 0 0 0 0 84 97 104 111 109 97 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 245 255 255 255 0 0 0 0 0 0 0 0 0 0 0 0 144 1 0 0 0 0 0 1 0 0 0 0 84 97 104 111 109 97 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 245 255 255 255 0 0 0 0 0 0 0 0 0 0 0 0 144 1 0 0 0 0 0 1 0 0 0 0 84 97 104 111 109 97 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 in your theme file the theme won't be applied correctly... what I did is I modified the theme and then saved that .theme file for my unattended install because I like the scrollbar to be the size of 13 not 17 as default... it looks like it doesn't work well...