BinaryData not seen by linker [VisualStudio]

I’m trying to compile my project, which has accumulated a lot of BinaryData in recent times on Windows. Now I’m greeted with hundreds of errors:

error LNK2001: unresolved external symbol 
"char const * const BinaryData::stair12_png

I tried creating the build files again from the Projucer but no success yet.

Any clue what might be going on here?