I believe the icon may be anywhere you like. At least for normal web type servers. From what I understand, you may code the path to the icon in each HTML page.
I also believe that the icon is normally found in the root level of your project. So you might check to ensure that the icon is among the output files. Maybe it's missing. Assuming you find it and the message resolves, I would think substituting your own would be as simple as saving your version of the icon using the same name.
Hmmm, I just generated WebHelp Pro and don't see an icon named favicon.ico. So perhaps try renaming one of the icons that are supplied to favicon.ico and see if the error resolves. I found three icons named:
RH looks for it at the root of your project folder. After generating it is in the root of your generated project.
There are a number of free programs that you can use to create your own favicon - just be sure to name the file "favicon.ico".
I have a icon (.gif). Renamed it favicon.ico. I've tried including it in the output files and publishing, and also went onto server and placed it in the Projects folder where all the merged projects exist (is this the root folder?). Can't seem to get it to work...
You could try this online service.
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If you Google favicon maker or favicon converter, you'll find a few easy step-by-step's and related freeware to create the favicon. I had the one for grafixtraining.com go from "Google" to posted on the web in about 45 minutes.
This may be helpful for others referencing this post who would like to change the icon image that RoboHelp uses by default.
To place an image in the browser tabs, address bar, and favorites lists, RoboHelp uses a file called whstart.ico instead of favicon.ico. If you overwrite this file in Program Files with your desired ico image (titled exactly the same, whstart.ico), RoboHelp will use your new icon image when generating and publishing projects.
By default my whstart.ico file was installed in the following location:
C:\Program Files\Adobe\Adobe RoboHelp 8\RoboHTML\WebHelp5Ext\template_skin
If you change the icon in Program files, the new icon will be used every time you generate webhelp. If that is what you want, that's the way to do it.
If you want different icons for different projects, generate the webhelp and replace the whstart.ico in that output. It will get overwritten each time you generate so keep a copy.
The program files method is the easiest and I just offer this for those of you who need different icons.
See www.grainge.org for RoboHelp and Authoring tips