I have tryed to play a new game WITH the mode solo to play the game but when i go to the guilds for the quest start (when you get your slave in other modes) i can side with everyone unlimited times and get the reward everytime but the quest does`t trigger so i can`t play the story.

Are there any errors in the console or the log? The log files are User/AppData/roaming/Strive for Power 2 (on windows). I tried the solo  start and it worked fine. I could only side with one guild and the New Step quest progressed.

nope there is no log it don`t crash the game. the quest doesn`t go to the next step. you can side with on but you can go to the other and side with them too. console don`t say anything too. oh and i have tryed 4 game starts and ALL have that bug and my game ist a clean install becourse haven`t play for 6 months. game version 0.6.1a

The current game version is 6.2. I would start with a more current version of the game.

jup have seen it too today. and bug was fixed