I'm getting an error when I try to install a plugin from the "maudioplugins_16_01_setupmac" app (the installer that's downloaded from the official website). The error looks like this:

Has anyone else experienced this before?
If I delete the contents of that folder, then the installation will go ahead fine. But if I come back and install something else later I will get that same error message again.
I'm not sure what could be causing the error. The file is not read only. My user has read and write access to the file and folder. I can manually go into Finder and delete it.
Any help would be appreciated
Thanks
