That's what I thought, but if you include other resources it's not
Are you including them also in "Project Options"? Because doing it that way have always worked for me. It doesn't work quite as well if you define them in a
.rc file with the same name as the program or a form unit because then the generated
.res overwrites the one automatically produced by Lazarus.
Another thing, in case it keeps not working, does the application icon show in the form's border? I've found that sometimes for some strange (to me) reason Windows show the correct icon in the form but "invents" its own for the task-bar. But then, I don't use Windows very much (in fact, once in a blue moon or thereabouts
)