Built an AppImage but can't get the icon to show in AppImage Pool

[kuiperzone]

Hi,

I've built an HelloWorld AppImage. It's working, but when I "integrate it" using the AppImage Pool app, the icon does not show (see screenie below). However, when I download other AppImages by others, such as the Popsicle app, their icons show fine.

I've poured through the Popsicle AppImage and extracted its contents to compare it with mine and, for the life of me, I cannot see what I am doing wrong. Below is a screenie of extracted contents of my Hello World AppImage. I have a PNG here, but have also tried SVG. I also have a range of sizes in the /usr/share/icons folders.

Here is what my desktop file looks like:

[Desktop Entry]
Type=Application
Name=Hello World
Exec=usr/bin/HelloWorld
Icon=zone.kuiper.helloworld
Comment=A HelloWorld application
Categories=Utility
MimeType=
Terminal=true
Keywords=

Any help appreciated.

PS. I am saving my desktop file in rerverse domain ID form, as it's the only way I can get AppData working. I am copying the approach in the Popsicle AppImage.

[kuiperzone]

You won't believe this but, literally immediately (and I mean seconds) after posting this I noticed that AppImage Pool has been updated to v 5.0.

I installed the update and clicked on Integrate again for my AppImage and the icon is now showing!

Solved I think.