AMIGASYSTEM
Thanks for the information. I will investigate that issue.
In the meantime IconClone has been revised to version 1.10 which will be posted on AROS Archives in the next few days
Work on the next icon tool is going well. It's called IconPress because it "presses" (joins) two images into an icon file. It does what ilbmtoicon does but in a more meaningful & user-friendly way.
Simply drop either two PNG images or two ILBM images in the two Display Areas on Left & Right. There are two buttons. "Save Icon" will save a PNG icon if both images are PNG. It will save a Classic Amiga Icon with OS35 Extension if both images are ILBM. "Save Argb" only works will PNG input images. It will save Classic Amiga Icon with OS35 Extension with Argb data chunks. For example Gorilla Icons are Classic Icons with Argb data chunks.
IconPress uses Neuquant Color Quantizing to reduce the 32bit PNG images to ILBM images with 8 bitplanes to be stored in the OS35 IFF Data. This image conversion is the basis for two small command line apps for AROS that I will write called icon_to_os4 (PNG to OS4.1) & os4_to_icon (OS4.1 to PNG). As far as splitting icons I'm working on two other small command line utilities icon2png (split PNG icon) & icon2iff (split Classic OS35 icon). DT2IFF already reduces a 32bit PNG to 8bit ILBM. All these small utilities will be posted to AROS Archives as well with source code
As mentioned earlier IconClone, IconPress, IconSplit, IconBatch, IconType & IconColor are all small icon apps that will be part of Icon ToolKit. They will also work as standalone icon apps. That's the plan.