Hey, thanks for the help, I have an Asus EeePC 1005HA(Intel Atom CPU N280 @ 1.66 GHz, 1GB RAM, Mobile Intel 945 Express Chipset Family) with MS Windows XP Home SP3.
Yes, I've manually deleted all files both in(since it's XP and not 7/Vista) "C:\Documents And Settings\UserName\ApplicationData\Lego Company\Lego Digital" and "C:\Program Files\Lego Company\Lego Digital Designer" after uninstall. Yes, I've downloaded the latest version o LDD from ldd.lego.com. Yes, when I edited the .ini file it was in "C:\Documents And Settings\UserName\ApplicationData\Lego Company\Lego Digital", and yes i've tried editing
UseShadersInScene=yes/no, UseShadersInPalette=yes/no, and UseRoundEdges=yes/no, and tried adding CompatibilityModeLevel=100.
There are no istances of LDD in the background, and when LDD closes itself, the LDD.EXE process closes itself too(unlike other programs where when they crash the process might still run and you have to close it yourself).
still it doesnt work, and as i said before, it worked fine till 2 days ago.