The target folder path is 'D:\\', so there is no problem with Korean or special characters. There is 'C:\Users\Users\AppData\Local\Temp\RHTMP\testrX9Gs3\MyHelp.chm' in the question content. This path is not my Target folder. Something seems to be the temporary folder path used to build in robohelp. But it's too dangerous to change the Korean '사용자' to english. Because that folder is a system account folder, environment paths of all other program can be twisted.
Is there any other way?
It works well in the 2017 version. The 2022 version works well to generate in pdf or frameless, but only chm generation doesn't work.
Target folder is any folder to which you are trying to generate the CHM. If the problem folder is one that Adobe is using during the generation, then you will have to take that up with Support. CHMs are an old technology and there are not many users here who can help.
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My site www.grainge.org includes many free Authoring and RoboHelp resources that may be of help.
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