I am not from Laminar Research; just a flight simmer.
I would suggest you update your version to XP11.26. This is the latest official version.
There is a version 11.30 but is still in the testing phase. Unless you know what you are doing in X-Plane ie having a considerable X-Plane knowledge base, stay away from this update. You may be asked if you want to update to this latest beta version. Say no.
If you are currently running XP11.26 I would suggest running the "installer" file. This file should find any corrupted and or missing files and fix the problem.