squashfs error compiling for 7570/speedport

Hi all, long time i don't post here.
I tried to upgrade my speedport 920 firmware, using 7270 v2 alien with last freetz trunk (at the moment 13373), but now i got

ERROR: modunsqfs: Error in build/original/kernel/kernelsquashfs.raw

Zum Vergrößern anklicken....

With june/july trunks (don't remember revision number) some fw were compiled (if my memory don't faults 7270v2 worked, with no alien fw) but there was no lan connection, only wlan.
As packages i checked only samba, ptp, and inadyn (no more working with last update).
Are these models still supported by freetz?
Regards
Tk