[Michael Krueger]

Is your footage on an external drive? This same error happened to me a couple of times when drive speeds were too slow.
If so, the easiest thing would be to copy the files to an internal hard disk, find an old autosave and let Premiere do the relinking.

[Michael Krueger]

I get your point but to be fair: there are no perfect editing suites, just different degrees of frustration so you have to pick and chose the issues you want to get used to.

Regarding yours, here are 2 suggestions:

1) Have you tried switching back to the frame raster and pulling the beginning of the audio clip to a full frame before you merge? That way the waveform should stay in place.

2) For your dailies, I believe you could put a Stereo Expander effect in the master channel, drop Stereo Expand to 0 and switch the output to mono in the render panel no matter what the sequence settings are.

Hope those help.

[Michael Krueger]

A7S II all the way! It is an excellent camera which not only can be upgraded with XLR Inputs but also holds its ground as a B camera on projects where much higher classed cameras are used simply because with its low light capabilities it can do something that no other camera out there can.
The only drawback in your case would be the 12.2 MegaPixel for photos. If that´s not enough, you might want to go for the A7R.
Canon is, as was already pointed out here, too far behind by now.

Michael

[Michael Krueger]

Hey Leonard,
I believe the best way would be to track the footage backwards until Premiere loses the track, stop the tracker, move the playhead to 10 frames or so before the track is lost, drag the mask to where you expect your object to be and maybe delete the last couple of keyframes when the track was already bad.
That should give your mask a smooth way in and make sure everything is on point.

Best,
Michael

[Michael Krueger]

Hi Christopher,
this problem seems to be an UAC issue on some Windows machines and connected to how access tokens for mapped drives are handled.
What worked for me was enabling linked connections via the registry editor following these instructions:

1. Click Start, type regedit in the Start programs and files box, and then press ENTER.
2. Locate and then right-click the registry subkey HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System.
3. Point to New, and then click DWORD Value.
4.Type EnableLinkedConnections, and then press ENTER.
5. Right-click EnableLinkedConnections, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7.Exit Registry Editor, and then restart the computer.

Hope it helps.

Best,
Michael