If you were using one of the figures that doesn't come preloaded I'd have meant did you just have the morphs used by the character loaded, or the whole lot, but with Aiko you don't get any choice. I've just loaded the base A3 and it took a couple of minutes - have you tried that (ie the !AIko 3 figure in the DAZ Aiko 3 folder, or Victoria 3 SR1/SR2/SAE from the DAZ People folder)? If that works but your saved figures don't then it isn't the amount of data, so it would seem like either a bad install (try redownloading Injection Pose Builder and reinstalling it), a problem with Poser 5 (but other people are using it OK - I assume you are loading CR2s and not trying to force it to load a compressed CRZ file), or possible a problem with the directory names in the German version of Poser 5 (that will probably stop you loading the base files too).