Hello there, me again. The above screenshot shows the error with 2 mods loaded, and yes this error was appearing from the beginning even when those mods were not installed.

I attached another 2 screenshots. (1) Validation of ArmA 3 Dedicated server installation & ArmA 3 server directory (2) error (mods are completely removed including a mpmission file).

Again, the issue was occurring after the first installation but the server is still "usable" but this issue makes it very hard and annoying to use the server, I have also tried to remove ArmA 3 server directory and reinstall it completely but the issue still persists.

Any suggestions are welcome,
thanks in advance!

Okay, no replay in a few months.

Since I tend to be the nice guy here's a summary of the "solution":
On latest A3 build (as of now 1.54) with Debian 8.x (64-bit) install these packages: libtbb2, lib32gcc1, lib32stdc++6 & libtbb2:i386

Have fun!