First off, kudo's for the instructions in the 4bit playground page. If I had been paying attention to the datasheet I found for my display, I'd have got it working the first time 
(For some reason the pin numbering is ass-backwards on my LCD). Still, I have a small question. For now, the random fruit example works perfectly. Single line, scrolling, all the bits. But, if I enable the 2nd line and the commented out 'score' bit the display stays empty. No noise, no nothing. Backlight comes on, but no character appear. Am I missing something, or have my earlier attempts killed just the second line? The display is a pc1602f, which should be hd44780 compatible.
(excuse me for lifting this old thread from the depths of oblivion)
Thanks!
Andre