Hi,i have the same problem on installing sid. Do you interest in further details of the error and what happend?
It seems that the cdrom is mounted at /cdromIf i try to run point 2 of the menu, debian tells that he can't "gunzip /var/cache/anna/Packages.gz" but under these directory there is no Packages.gz. There is only an Packages as a link to an non-existing file (because the folder does't exist).
regards Matthias