PolywickStudio 3 Posted May 28 (edited) Andy's VCL Fix Pack is a Delphi open-source unit that fixes VCL and RTL issues at runtime by patching the original functions. Andy's Unit contains easy-to-use functions to update code that cannot be easily recompiled or changed. If you try to change VCL sources (files in Source folder of your RadStudio, Delphi or C++ Builder installation) and attempt to recompile them within your project, you'll get multiple errors, such as: DCU mismatch, (file1.pas) is compiled with a newer version of (file2.pas). This occurs when source-code is compiled with a different file and needs to be fully recompiled. In the below example, I will use Andy's fix pack to fix a long standing bug - QC15408. Without fix: With fix: Repository: https://github.com/PolywickStudio/AndyVCLFIXPack Edited May 28 by PolywickStudio 1 Share this post Link to post