I've not run into this previously with other libraries but I'm unable to trace through the ImageEN source. I can right-click on ieVision in the uses clause and Open File at Cursor to open ievision.pas, but I can't find declarations or set breakpoints. I don't see that the compiler directives {$D-} or {$DEBUGINFO OFF} have been set. What am I missing?
You'll need to recompile the ImageEn DCU files if you need debugging support, by default they do not include debug information.
To avoid going around in circles, put some broken code in the ImageEn file, compile all in your project and ensure that it breaks on the code your inserted. Then remove the broken code and compile all again.
You might want to remove/hide the official ImageEn DCU files too.