Browser wont open when launching process

Hi.

I am new using Bonita Studio community. I am having trouble running one process. I am trying to design a simple Diagrams taken from Getting start manual. I setup everything according to manual and mostly everything worked fine. I executed the Diagram whitout until I decided to restart Bonita Studio software. After restarted itt when I click on "Run" 2 dialogues boxes appear (normal ) but the process is not launch in my web browser. No warning or errors shows up. 

Hope someone can help.

Thank you

Laurent

It seams it works with FireFox but not anymore with Chrome for me. I change browser by changing it in the preference of Bonita Studio

 

Did you see log of Bonita, in help menu? All error shown in log files.

I haven't seen any thing wrong in the log files. But as with Firefox its working so its fine I may need to have a look at Popup blocker.