Firstly, please check if these files (xulrunner29.0, xulrunner33.0, xulrunner45.0 ) are in this path: C:\Program Files (x86) If they are not here, please go to download these files, then unzip them, then move them to this path.
http://www.botchief.com/xulrunner29.0.zip
http://www.botchief.com/xulrunner33.0.zip
http://www.botchief.com/xulrunner45.0.zip
http://www.botchief.com/xulrunner60.0_x86.zip （32-bit system）
http://www.botchief.com/xulrunner60.0_x64.zip （64-bit system)
Select one download from the next two links:
If the system of your computer is 32 bit, then please download this one: http://www.botchief.com/xulrunner60.0_x86.zip
If the system of your computer is 64 bit, then please download this one: http://www.botchief.com/xulrunner60.0_x64.zip
Please install a Winrar compress tool if you cannot extract the zip file.