Thanks for uploading the images - sadly, the Sparc one failed but with a different problem. The 'load installer components from CD-ROM' step fails immediately. I've scraped this out of syslog and it's complaining, as best I can see, about segmentation faults and a missing file.
Mar 25 14:04:23 anna-install: Installing apt-cdrom-setup
Mar 25 14:04:23 kernel: [ 752.922130] anna[3075]: segfault at 0 ip ffff800100549c000+160000]f800100234f74) sp 000007feffbd8a11 error 1 in libc.so.6[ffff8001004
Mar 25 14:04:23 anna-install: Installing sid-support
Mar 25 14:04:24 cdrom-checker[1165]: (process:2835): Segmentation fault
Mar 25 14:04:24 cdrom-checker[1165]: (process:2835): Segmentation fault
Mar 25 14:04:24 cdrom-checker[1165]: (process:2835): Segmentation fault
Mar 25 14:04:24 cdrom-checker[1165]: (process:2835): Segmentation fault
Mar 25 14:04:24 kernel: [ 752.996804] anna[3081]: segfault at 0 ip ffff80010043cc000+160000]f800100234f74) sp 000007feffdc0a11 error 1 in libc.so.6[ffff8001003
Mar 25 14:04:24 main-menu[248]: INFO: Falling back to the package description for brltty-udeb
Mar 25 14:04:32 main-menu[248]: INFO: Falling back to the package description for brltty-udeb
Mar 25 14:04:32 main-menu[248]: INFO: Menu item 'load-cdrom' selected
Mar 25 14:04:32 cdrom-retriever: warning: File /cdrom/dists/sid/main/debian-installer/binary-sparc64/Packages does not exist.
Mar 25 14:04:33 kernel: [ 762.088167] anna[3093]: segfault at 0 ip ffff800100441c000+160000]f800100314f74) sp 000007fefff1a981 error 1 in libc.so.6[ffff8001004
Mar 25 14:04:33 main-menu[248]: (process:3091): Segmentation fault
Mar 25 14:04:33 main-menu[248]: WARNING **: Configuring 'load-cdrom' failed with error code 139
Mar 25 14:04:33 main-menu[248]: WARNING **: Menu item 'load-cdrom' failed.
Mar 25 14:04:41 main-menu[248]: INFO: Falling back to the package description for brltty-udeb
Mar 25 14:04:53 main-menu[248]: INFO: Falling back to the package description for brltty-udeb
Mar 25 14:04:53 main-menu[248]: INFO: Menu item 'di-utils-shell' selected
/var/log #
The missing file genuinely isn't there - it's looking for Packages, but the only file in that location is Packages.gz; there is a Release file in a parent dir somewhere that lists checksums for both (I'm assuming the Release file drives the content the installer is looking for).
I've verified the ISO image against the MD5 sum supplied, verified the disk on burining, and verified the disk via the installer on the Sparc box - so I think the media is okay.
Is this just a misbuild/package issue with the current image? The prior image got much further than this before falling over with the Vim dependancy problem. Again, thanks in advance for any light you can shed on this... I'm more than happy to help out if there's something I can do my end (admittedly, I've never been involved in Debian builds before so probably not too much I can offer beyond testing).