What can i do?
The first thing you
should have done was to try running it in a terminal, as that usually shows helpful error output if it fails. However:
Since you're using fedora 25, it might be either because of the problem
reported here, or because of my fix for it.
If you keep your fedora updated, it will recently have installed a different version of libclang. The original CodeLite package won't work because it expects the original libclang; you need to download
this fixed one.
I uninstalled and reinstalled it.
Alternatively, if when you reinstalled you downloaded the fixed package as linked to on the CodeLite repo page, and if you
don't keep your fedora updated, then the fixed package probably won't work for you. If that's the case, either update your fedora (#> dnf update), or download and install the
original package.