I have installed debian the second time and I still get the same error. It says:

EZ-CHROOT ERROR

Mount failure!

/home/user.MyDocs/debian-m5-v2.img.ext2 failed to mount on loop0

/proc/misc: No entry for the device-mapper found
is device-mapper driver missing from kernel?
Failure to comunicate with kernel device-mapper driver.
Incompatible libdevmapper 1.02.20 (2007-06-15)(compat) and kernel driver
Command failed
mount: mounting /dev/dm-0 on/.debian failed. No such file or directory.

What can I do to resolve this error ?