This is a bugfix release for v184.108.40.206 beta.
There was a bug in older DropboxPortableAHK versions, which would lead to an error when using v220.127.116.11.
An error message would have been displayed, saying ‘Could not query instance db, probably the key was wrong.’
v18.104.22.168 fixes that.
Please check out the user group for more information, the download link, and to report any issues: https://groups.google.com/forum/#!forum/dropboxportableahk