I've been having the same problem. I used this IcoFX program and everything seemed to work fine, but I still received the same error message in Captivate.
The right ico-file for import icons should containts UNCOMPRESSED image!
Be carefully, when you making the ico-file. Usually this option changing in program properties.
But even after that Captivate import just one 256x256 32-bit icon in exe-file, without 48x48x32-bit, 32x32x32-bit, 16x16x32-bit icons.
As a result, using 256-colors picture.
My opinion, that it's program bug. Shame to Adobe developers.
I solve this problem this way:
1. Make a right (uncompressed image) ico-file by IcoFX.
2. Replace icons in result exe-file by icons from ico-file. Using Axialis IconWorkshop.
Just to add my bit. I found the IcoFx progrm working fine using the Resource Editor from the Tools menu you can easily change the icon.
Even if you use the highest colour settings (true colour) when designing.
Here are the steps I used with IconFX to create an icon file that contains all 10 versions of the image that Captivate requires. (See post by Saurabh_Minni, Mar 11, 2009, for the list). My steps are based on the ones given in the IconFX tutorial at http://icofx.ro/tutorials/tutorial1.html.
1) Create the first image as 256x256, 32-bit color.
2) Choose the "Icon/Create Windows Icon From Image..." menu item
3) In the dialog that pops up, make sure the following boxes are checked and all others are cleared:
XP Colors 16x16, 32x32, 48x48, 256x256
256 Colors 16x16, 32x32, 48x48
16 Colors 16x16, 32x32, 48x48
(Note: IconFX default does not pre-select the 16 colors 48x48 box, but the other 9 you need should all be pre-selected as soon as the dialog window opens).
4) Also, clear "Options/Preferences/Options/Compress 256x256 images for Windows Vista"
I HAVE BEEN TRYING TO CHANGE THE ICON USING MICROANGELO. I AM SET UP FOR VISTA. WHAT ARE THE PROCEDURES? I KEEP GETTING CORRUPT FILE (CANNOT READ, $ INTEGER- ERRORS. CAN ANYONE HELP! THE CUSTOM ICON THAT I CREATED SHOWS UP BLURRY IN VISTA. THANKS!
I tried using one of those sizes still get the same error. how do you insert one icon in all those 10 different sizes? this answer is not clear.
This is a thread from 2009??? I don't think you are still using Captivate 4, since we are at version 11.5.
Please start a new thread and explain what you want to do. Do not forget to mention the exact version number (as mentioned under Help, About Captivate) and the OS.