I have a similar problem with the kubuntu iso and it says : PROBLEM: Instalation failed....could not cache Kunbuntu Live CD...checking the log file.
I checked the md5 sum of the iso and it's ok
(BTW installing from the dvd works, but it's less flexible.)
A recurrent error is : ioctl: LOOP_CLR_FD: No such device or address... but I don't really know what it's about...
My PC :
Dell Dimension 8300 - P4 3GHz HT
Nvidia Geforce 2
Pinnacle PCTV Rave PCI
Here is the head and tail of the log :
Reading package lists...
Building dependency tree...
Reading state information...
The following packages will be REMOVED:
brltty knetworkmanager network-manager
0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded.
Need to get 0B of archives.
After unpacking 5738kB disk space will be freed.
(Reading database ... 75365 files and directories currently installed.)
Removing brltty ...
Removing knetworkmanager ...
Removing network-manager ...
ioctl: LOOP_CLR_FD: No such device or address
/tmp/tmp.qfTlk23076/casper/filesystem.squashfs: No such file or directory
The full log is attached.
Any help appreciated...