Just checked, the issue is resolved in the hotfix 1.54.0.133596.
Thx, BIS :)

This issue made it to the final release 1.54, and now any mission edited using the previous patch (1.52 if I recall) is locked ! The problem appears to be the pbo containing CfgPatches named 3DEN which has been renamed or removed.

This is a critical retrocompatibility issue !

JCae, could you please set the severity level to the highest ?

That makes sense.
But a blur effect could be more appropriate to do this.

Yup, it does (at least i'm certain ArmA 2 did)

False alarm, I was too sloppy.

Solution :
Call the EH like this (_this not an array)
_KeyDown = (findDisplay 46) displayAddEventHandler ["KeyDown", "_this call KeyDownFunction;"];

Double-post, sorry

Here's a more explicit image of the Javelin Top-attack flight pattern
http://www.inetres.com/gp/military/infantry/antiarmor/Javelin/Javelin_top2.gif

Agreed. The Kamaz Typhoon is a really nice candidate for OPFOR logistics & transport vehicle.

Here's another nice pic of the modular units :
http://img-fotki.yandex.ru/get/6210/154814723.4/0_6b442_4e23c459_XL.jpg