This is an OUTRAGE.
I can not believe that my HTC One still won't connect with My MacBook Pro Retina 2013 (OSX 10.9.4).
As the OP said, the HTC Sync Manager is embarrassingly awful. Really, it's just RUBBISH – how could a company allow that to be released? (and continue to not be fixed)?
And then Android File Transfer doesn't work. Both Sync Manager and Android File Transfer say no device detected, please plug it in.
But it is plugged in with a USB cable.
The weird thing is it's worked in the past. it seems inconsistent. I keep thinking there MUST be a proper fix for this that I haven't found, but each time I look it's not out there.
Is there something I'm missing? Or is it really the case that this HTC One piece of sh#t can't reliably be mounted in a Macbook Pro via USB for file browsing/transfer etc??
Note I don't want or need any automatic syncing or cloud'ing or music app's or any 'magic' stuff. And I don't want to do it via WIFI or bluetooth or the internet. I just want to view the contents of my phone via a usb cable if that's ok. I know that's a lot to ask.