If the problem is with the SideBarEnhancements a basic fix is:
1. Remove the package,
2. Try to update to Package Control 2
Be sure this is done, at least manually:
rm Sublime Text 3/Installed Packages/SideBarEnhancements.sublime-package
rm -rf Sublime Text 3/Packages/SideBarEnhancements
Install the package with Package control 2
There is a dedicated thread for upgrading/installing issues github.com/titoBouzout/SideBarE ... issues/109 please use it.