Why are my units “compiled with a different version” of my own files?

Question

I\'m building a program that uses plugins. Unfortunately, the plugin framework\'s dynamic linking forces the RTL and VCL out of my project EXE and into the BPL versions, an

Answer 1

For future reference, simply pointing the compiler to source-code versions of the "problem units" fixed this for me (i.e. adding the folders containing the source code to the search path).