You could try exiting NetBeans, deleting the NetBeans IDE Cache directory (displayed in the About box), and then restarting. If that doesn't work, you could do the same with the NetBeans IDE User directory--though note that this will reset all your IDE settings.
-- Eirik From: Thanasis Kakalis <athkaka...@gmail.com> Sent: Tuesday, October 23, 2018 2:38 PM To: us...@netbeans.incubator.apache.org Subject: Fwd: NetBeans 8.2 @ macOS Mojave 10.14 - question mark in C/C++ project - Some #include or #error directives failed - Configure Code Assistance not working From: Thanasis Kakalis <athkaka...@gmail.com<mailto:athkaka...@gmail.com>> Date: Τρί, 23 Οκτ 2018 στις 9:15 μ.μ. Subject: NetBeans 8.2 @ macOS Mojave 10.14 - question mark in C/C++ project - Some #include or #error directives failed - Configure Code Assistance not working To: <us...@netbeans.incubator.apache.org<mailto:us...@netbeans.incubator.apache.org>> Greetings dear all, My name is Athanasios Kakalis and I'm using NetBeans 8.2 with HPC macOS X (http://hpc.sourceforge.net/) on a mac book pro for writing C and Fortran code. Prior to updating from macOS High Sierra 10.13 to Mojave 10.14, both C and Fortran projects were functioning properly. Upon OS update and mac restart, when IDE was opened, the C project box got a question mark, along with the following message "Some #include or #error directives failed" The question mark disappears when Code Assistance (right click/Code Assistance/C/C++ Code Assistance) is deactivated, whereas Configure Code Assistance (right click/Code Assistance/) remains deactivated. What can I do to repair the C project, and in turn, the IDE? I've checked the following link, but I didn't figure out what to do https://netbeans.org/bugzilla/show_bug.cgi?id=268327 That said, the Fortran project is still working properly, and I'm not sure about the impact of macOS update on the aforementioned mishap. I really like NetBeans and I want to keep using it, therefore I'm reporting my problem as clearly as I can. Many thanks in advance to any feedback towards my inquiries. Best Regards, Athanasios Kakalis