Problems creating custom ISO file...only one step away

Hi, i have only one problem to create a custom ISO file. My OS is SuSE8.1 with all updates and the current bugfix rpms - autoyast2-installation-2.6.40rc1-0.noarch.rpm - autoyast2-2.6.40rc1-0.noarch.rpm - yast2-runlevel.rpm When i try to create a custom CD i enter the path to the suse rpms and the destination path for the (expected) iso file. Then the program is processing the data in my xml file. After that it displays - creating ISO image - saving control file - copying packages - and then when i press the button next it is poping up another window "wait while creating iso file". thats all nothing happens then The only thing which will be created is a 57344 Byte iso. nothing else any hints greetings marc