Problems using a HTTP Repository and LVM Partitioning

Hi all, I am experiencing problems while the installation of SLES 9 with the following setup: A HTTP Repository holds the complete installation media and the autoyast xml control files. Booting the machine which is about to be installed works as far as it concerns reading the control file, partitioning the harddisk and starting the installation. The partition table looks as the following: /boot 100M /swap memory-dependant LVM containing / /usr /var /opt /srv The installation stops with this error message: ERROR(Media:Unknown error in subsystem)[/var/adm/YaST/InstSrcManager/IS_CACHE_0x00000002/MEDIA/media.2] If I do not use LVM the installation proceeds smoothly. Any help is appreciated! Kind regards Marko