For those who having an old computer system and experiencing the 'white textures' bug is now a Low End patch in the download sections available. i could not test this patch due to a lack of a missing test system. so report here if this has worked for you.
again: only for people having the white textures bug, this patch brings a decreased graphics quality with it!
[EDIT]Updated the patch, *should* work better now[/EDIT]