I recently upgraded to Mojave. So far I haven't had any problems with it. However, when I restart the Mac, I get a pop-up saying '“rdmgrab” is not optimised for your Mac and needs to be updated.'
There is a process called rdmgrab that runs in the background. (There's another called rdmd, but I don't know if it's related.)
There is a file called rdmgrab in /opt/local/bin,
a rdmgrab.plist
and a few rdmgrab_[1811xx].log
files.
I have no idea where this file came from. Does anyone have an idea what it might be, and whether it's safe to dump it?