Standard Version:

When I download the player without the debugger from here and place the libflashplayer.so file into the ~/.mozzila/plugins/ directory the player works fine.

Debugger version:

But when I download the plugin from:

http://www.adobe.com/support/flashplayer/downloads.html

(Download the Linux Flash Player 11.1 Plugin content debugger (TAR.GZ, 6.86MB))
The player is not working.

I need to know how to install the debugger version.

System info:

Linux mashine 3.0.0-15-generic #26-Ubuntu SMP Fri Jan 20 17:23:00 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Browser info:

/usr/lib/firefox-9.0.1/firefox: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15, stripped

EDIT:

I set up a virtual mashine with ubuntu 11.10 32bit version and the flash player with debugger works fine.
So it's a problem related to the 64 bit version.