C::B passes `-J' instead of `-I' key (input format) to the resource compiler:
$(RESCOMP) -i <...>.rc -J rc -o $(default_RESOURCE) -O coff --include-dir=<...>
It's easy to change it:
1) Go to "Settings/Configure plugins/Compiler" to view the global compiler options.
2) Click the "Other" tab and then click "Advanced options...".
3) Click "Yes" in the warning dialog that appears.
4) Select "Compile Win32 resource file" in the "Available commands" listbox.
5) Change "-J" to "-I". The line should now read:
$rescomp -i $file -I rc -o $resource_output -O coff $res_includes
That's it!