itch.io

...that's honestly weird, I tried with invalid characters and it somehow works. I'm a bit blind on your config so try the following:

• Try uninstalling the addon and then reinstalling it (the uninstall button is located under the "Get Extensions" section of the settings if you installed the ZIP). Then try exporting again. I incorrectly set the fix to the same version number so it might not have overridden the old one with the new.
• If it doesn't work, go to the VRM tab (VRM Addon for Blender), then open the Meta tab, and delete the "Name" field entirely, then write something else and try exporting again. See image. Does it still work?
• If you save the blend file in another folder and try exporting again, does it work?
• If it still fails, copy and paste what appears in the System Console . To access it, Window -> Toggle System Console, and copy the stuff that appears in the logs.