I have the same problem.
I tried to download http://www.botchief.com/xulrunner33.0.zip but I can't decompress this. Probably this zip is empty.
What should I do?
Thanks for the feedback.
Let us know if you need more help in the future.
Please go to 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)
Then re start the program. Please install a Winrar compress tool if you cannot extract the zip file. You can download winrar tool here: https://www.win-rar.com/download.html?&L=0