Updated ISO (exelinux_squeeze_trinity_gpl_1.1.iso) is done. The installer should now work properly.
New URL : wget -c "http://exe-linux.fastfishwebsolutions.com/trinity/exelinux_squeeze_trinity_g..."
md5sum: wget -c "http://exe-linux.fastfishwebsolutions.com/trinity/md5sum_exelinux_squeeze_tr..."
The patch worked on the old ISO. It will stay in place till the new is tested a bit more.