Hi,
Do you have DEFINE LCD_COMMANDUS 1000 in your code? If that's the case try increasing that to 2000 to start with. If that doesn't help put a PAUSE 500 right at the beginning of the program, that will let the LCD startup for sure.

If that doesn't help either, increase the COMMANDUS and DATAUS defines. Test with 10000 for COMMANDUS and 500 for DATAUS just to see if it helps. If it works, try to find the sweetspot just over where it stops working.

/Henrik Olsson.