Regarding the screenshot, are you using some sort of extension manager in addition to Joomla? The information icon is not standard with Joomla.
JFile: :read: Unable to open file: /home/stedica/public_html/administrator/components/com_jfbconnect/administrator/install/install.modules
Does that file actually exist or is there read permission on the file? If you've uninstalled then it's possible it was removed. Can you trying installing JFBConnect one more time and then try to uninstall again?
-Melissa