Hi, ... Alexander
I use your = D-Fend Reloaded, "1.0.3rc1", D-Fend Reloaded PortableApps package".
i have try to add an icon file = "essai.ico" that have, 1 meg size, 480 x 480, 32 bit colors,
In the file attached "ErrorMessage.jpg" = It made an error like the file attached = it's when added "directly" inside "App\IconLibrary" directory.
In the file attached "ErrorMessage2.jpg" = It made an error like the file attached = it's when added inside "Profile | Select Icon | Add | add single icon".
These Error messages (upper), is for the same icone files, but not included the same way.
It made that errors even on others icon files, ... that have size bigger than 256 x 256, ...
It made that errors also inside a strict minimum "Vanilla" installation.
In clear = It seem related to icon size or icon bigger than 256 x 256.