Thinapp icon size?

Hi all,

I have a small but weird issue.

I am using an .ico file which its resolution is 21x21. This icon file is also used as a header for an hta file.

Outside of the Thinapp, everything works fine and dandy.

After it is compiled, however, the icon does not show, both on the file and in the hta in its header...

Is there a specific standard for icon sizes in order for Thinapp to make use of it?

Thanks!!