Installed the 01/12/2019 Nightly Build (11552).
Then built C::B from SVN 11554 source, with mingw-w64-gcc-8.1.0 compiler, on Win10 64-bit platform, using the 11552 nightly.
The following contributed plugins failed to build: SpellChecker and Exporter
SVN 11554 source also has the files for the following contributed plugins: appdata, pythonplugins, valgrind, wxSmithDemo, wxSmithExplorer and wxSmithSTC. Were these suppose to be included in the ContribPlugins.wx31_64.workspace?
Regards!