Okay, looking in the log file, I found this:
16:31:32 EDT: PlugInManager: Loading PlugIn: /usr/lib/opencpn/libcelestial_navigation_pi18_v15_amd64_pi.so
16:31:32 EDT: Error: /usr/lib/opencpn/libcelestial_navigation_pi18_v15_amd64_pi.so: wrong ELF class: ELFCLASS64
16:31:32 EDT: PlugInManager: Cannot load library: /usr/lib/opencpn/libcelestial_navigation_pi18_v15_amd64_pi.so
16:31:32 EDT: PlugInManager: Loading PlugIn: /usr/lib/opencpn/libgrib_pi.so
16:31:32 EDT: Error: libbz2.so.1.0: cannot open shared object file: No such file or directory
16:31:32 EDT: PlugInManager: Cannot load library: /usr/lib/opencpn/libgrib_pi.so
What is an ELF CLASS?
As for the grib... The file is there, but another library is missing?
kevin:/usr/lib/opencpn$ pwd
/usr/lib/opencpn
kevin:/usr/lib/opencpn$ ls -l
total 1792
-rw-r--r-- 1 root root 786712 Jul 12 16:02 libcelestial_navigation_pi18_v15_amd64_pi.so
-rw-r--r-- 1 root root 371060 May 8 11:32 libdashboard_pi.so
-rw-r--r-- 1 root root 277352 May 8 11:32 libgrib_pi.so
-rw-r--r-- 1 root root 391416 Jul 12 16:02 libweatherfax_pi18_v06_amd64_pi.so
kevin:/usr/lib/opencpn$