🚀 go-pugleaf

How have you assigned the icon to your application?

How did you create the icon?

I've always had issues with icons and BCB when you add them via the Project 
Options.  Now I always remove the default .res file from the project and 
create a new one using some thing like ResourceBuilder from SiComponents.  I 
think (and I might be totally wrong here) that Vista has a issue when 
locating the default icon because BCB names it as "MAINICON" as opposed to 
using the default numeric ID I.e. 101.

Also, vista seems to complain if your icons are not correctly constructed.

To test this, use something like ResourceHacker and pull on of the system 
icons out of shell32.dll.  Remove the default resource file from your 
project and add in a new one, if possible created with ResourceBuilder.  Add 
the extracted icon to the resource using an ID instead of a string name and 
make the Id 101.  Compile and try...

HTH

Mike C