Cannot execute binary file

I'm trying to install JasperReports Server 4.1 on Linux Ubuntu (release 11.04) as root and have following message:
-bash: ./jasperreports-server-cp-4.1.0-linux-x64-installer.run: cannot execute binary file

Is any idea what should I do in order to install Jasper?
Previously, I installed JasperReports Server 4.0 on Linux Red Hat without any problem. Is it related specifically to Linux Ubuntu?

Could you post the output of these commands?

uname -a
file jasperreports-server-cp-4.1.0-linux-x64-installer.run
ldd -r jasperreports-server-cp-4.1.0-linux-x64-installer.run

Here are outputs for commands:
# uname -a
Linux 64-cncrclinrpts 2.6.38-11-generic-pae #48-Ubuntu SMP Fri Jul 29 20:51:21 UTC 2011 i686 i686 i386 GNU/Linux

# file jasperreports-server-cp-4.1.0-linux-x64-installer.run
jasperreports-server-cp-4.1.0-linux-x64-installer.run: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.4.0, stripped

# ldd -r jasperreports-server-cp-4.1.0-linux-x64-installer.run
not a dynamic executable

have you tried actually setting the execute bit for the file?

The mode is 755:
-rwxr-xr-x 1 root root 329844862 2011-09-09 09:11 jasperreports-server-cp-4.1.0-linux-x64-installer.run

Looks like you are trying to run a 64-bit x86-64 binary on a 32-bit i386 system.

Regards,
Alister

Thank you to all.
Thank you Alister.
I've tried to install 64-bit file edition on 32-bit Kernel system and that's caused a problem.
I successfully installed 32-bit edition.
Best Regards.