wine + wine_gecko + Ubuntu 15.04 = gecko don't load

I’ll make it short.
Wanted to test Graal Reborn under wine (Ubuntu 15.04).

Only Bomber Arena was working fine.
Seems like others, because showing intro window, and then asking a web page, does not work.
Well, like showing black screen except for npc for one server.

It now seems that the gecko html engine does not load because it is an old version (1.6.2) compiled with gcc 1.9.
See bug https://bugs.launchpad.net/ubuntu/+source/wine1.6/+bug/1383214

Edit1: Will try wine 1.7 when I will be in front of my computer by following these instructions:
https://www.winehq.org/download/ubuntu

Edit2: Ok, installed wine 1.7(.38).
Although wine_gecko package did not worked, this version detect the problem and propose to download it in wine.
This works, after that seems like all servers works fine.