okay.... the problem has been resolved... I installed the latest version of silex manually and the error didn't appear after that... so I think that maybe that softaculous had a broken version that wasn't installing everything needed to run properly.
I just recently started my account and already am having issues. from the beginning, I tried going to my site and i was getting a http://staff.x10hosting.com error page... not sure why.... now I am getting an error that some file is calling a non-existent file:
Fatal error: main()...