hi there,
finally fixed the problem with loads of help from one of my teachers(actually he fixed it)! now i am able to sort of preload the image sequences for the pix_multiimage object, i didn't quite figured it all out how it works, but i would gladly share the patch if someone is interested..... to be honest the "too many files problem" isn't really solved i can preload the sequences and so they won't be loaded again and again, but i bet there is a limit of files i can preload too, so i'll push it to the max, to see how deep the rabbit hole really goes :)
greets johann