Rafli said

XULRunner Error: platform version '59.0.2' is not compatible with MinVersion > = 58.0.2 MaxVersion < = 58.0.2

Hi,

Would you please take a look at this article (and scroll down some) :

https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions

Please try this steps:

https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions#w_xulrunner-error

Edit: Oops, @Happy112 much faster than me. How can I delete a post?

sabaraha said

Please try this steps: https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions#w_xulrunner-error Edit: Oops, @Happy112 much faster than me. How can I delete a post?

Absolutely no need to delete  ! (only moderators and administrators can do that anyway) Don't worry about it - happens all the time  !  :)