Need help please

[Tom Masterson]

I know this is probably off topic but I and my colleagues are very 
confused.  I am using ubuntu 11.10 fully updated.  I have a program that 
installs to a subdirectory of /opt.  It comes up in a "ls -l" with 
-rwxr-xr-x permissions.  When I try to run it either as myself or as sudo 
I get a "file or directory does not exist" error.  As I say al list and 
even the file command say it is there and executable.  Any ideas?

Tom