WiX RemoveFolderEx not working?

Question

I wanted WiX to delete the AppData folder when it was deleted, so I looked at RemoveFolderEx and followed a few posts / tutorials on how to make it work. As far as I can tell, my implementation should work, but it is not. I am using the following:

<Directory Id="TARGETDIR" Name="SourceDir">
    <Directory Id="AppDataFolder">
        <Directory Id="PRIVATEDATAFOLDER" Name="MyApp"/>
    </Directory>
</Directory>
<Property Id="PRIVATEDATAFOLDER">
    <RegistrySearch Root="HKCU" Key="Software\AppCo\MyApp" Type="raw" 
                    Id="APPLICATIONFOLDER_REGSEARCH" Name="PrivateDir" />
</Property>
<DirectoryRef Id='PRIVATEDATAFOLDER'>
    <Component Id="PrivateData" Guid="myGuid">
        <CreateFolder Directory="PRIVATEDATAFOLDER"/>
        <util:RemoveFolderEx Property="PRIVATEDATAFOLDER" On="uninstall"/>
        <RemoveFolder Id="PRIVATEDATAFOLDER" On="uninstall"/>
        <RegistryValue Root="HKCU" Key="Software\AppCo\MyApp" Name="PrivateDir" 
                       Type="string" Value="[PRIVATEDATAFOLDER]" KeyPath="yes"/>
    </Component>
</DirectoryRef>

Am I doing something wrong here?

EDIT: After checking the verbose log I get an error:

WixRemoveFoldersEx: Error 0x80070057 : Missing Folder Property: PRIVATEDATAFOLDER

Answer 1

" 0x80070057: " ": PRIVATEDATAFOLDER" , " PRIVATEDATAFOLDER", , 'secure = "yes" PRIVATEDATAFOLDER?

Answer 2

, . , , RemovedFoldersEx .