Yeehaaa - my wg games is working properly AGAIN and i can launch them with the launcher.
Just as "themistocles" i did the mistake to installe game center. I didnt like it and deinstalled it, but had to fiddel around to get games (wot, wows, wows public test) to work again, and they could only be launched by the exe file, because when you install game center it delete the games launcher.cfg and launcher.log file. Problem is, if you have installed game center and delete it, you can launch the game with the exe-file, but only until next game update, then you have to installe game center if yo want to update and play the game and that was what happened when wows p-t had a minor update, i couldnt launch the game with exe-file anymore.
Yesterday i did some (a lot) searching and found the proper installer to wot and wows p-t, and by luck i ended up here in this thred and got the link to wows installer kindly presented to us by "themistocles" (you are my friend for life).
I spend the rest of the day to install game againg, and by advice of an old gamer friend i installed games over old installments and preserved all changes made in game settings, mods and so on.
Damn im a glad ol' man today, smiling from ear to ear. And i have lerned a lesson: NEVER DELETE OLD INSTALLERS. All 3 are now in stock in a seperate folder.