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

I just had the same error message in Delphi XE. Mine was solved after closing Delphi, opening it again and recompiling my project.