cadence in sarge, chroot

["Gudjon I. Gudjonsson" <gudjon@mc2.chalmers.se>]

Hi
   Unfortunately I do still have a problem with chroot when I run cadence. 
When I do in chroot /var/chroot/sarge-amd64
gudjon@mve035:~$ strace /usr/local/cadence/tools/bin/cds_root
execve("/usr/local/cadence/tools/bin/cds_root", 
["/usr/local/cadence/tools/bin/cds_root"], [/* 43 vars */]) = 0
strace: exec: No such file or directory

The file is executable since ls -la gives
-rwxr-xr-x  1 root root 30337 Oct  5 
2004 /usr/local/cadence/tools/bin/cds_root

When run in the normal system I get
gudjon@mve035:~$ /usr/local/cadence/tools/bin/cds_root
Error (cds_root): cds_root requires a single argument which
is the name of an executable found in $PATH.

This is in fact normal behaviour but there seems to be no difference between 
these files in / and /var/chroot/sarge-amd64. What makes files sometimes 
unexecutable?

Thanks 
Gudjon