Metro 6.2.3 won't record soft synths

[fastlanephil]

I installed Metro 6.2.3 and did some editing and mixing down. Everything worked fine. Then I loaded an instrument into ST2 or GPO or tried NI's B4 and instead of being able to record I get this alert message.

"The core audio driver returned either an invalid or null audio stream."

The stop button then starts to flicker a bit. Metro 6.2.3 crashed once also. When I use the previous version it records fine. I have energy saver at "Highest".

Before I upgraded to Metro 6.2.3 I installed Apple's latest security update that came out today and then repaired permissions.

iMac G5 1.8ghz.

[fastlanephil]

Metro 6.2.3 records with built-in audio but not when using the Tascam US-122. I Just tried the M-Audio Transit and i'm having the same problem with it also. I keep getting that same alert message.

[Scoot]

>New: If a core audio device returns an invalid stream
>while recording Metro now stops.

So what's the definition of an invalid stream?


In your particular setup was everything on and awake before Metro was launched?

I used to have problems with having midi in running but midi out offline.

A shutdown and left for a minute and then a startup kicked it back into action. If I was ever needing to fault find, this shutdown tactic is my first step.

[Jerm]

Also try changing the Metronome from internal to Metronome. This seems to be a problem related to internal ports.

[fastlanephil]

I changed the metronome to metronome from internal and it worked fine with the M-Audio Transit. When I hooked up the Tascam US-122 and I couldn't select any third party plugins. The Apple soft synth would always show up. I then selected the Tascam US-122 in the metronome and saved Metro prefs and it looks like every thing is working right again.

Thanks for the help.

[Jerm]

I tried plugging in my USB quattro but I still could not reproduce this problem. If someone can give me more details I would like to investigate this further.

For example, what OS are you running? What version of Quicktime?

[fastlanephil]

Jerm,
I'm using OSX 10.3.7 and QT 6.5.2

I started tossing questionable plugins and finally got down to Native Instrument's B4 Demo and it look's like it was the problem because now I can load and play every thing with metronome selected in the metronome when using my Tascam US-122.

[Jerm]

I have recently discovered the source of the problem and while it only rears its ugly head seldomly and only in certain situations, it does appear to be a problem with Metro that will be addressed in the next (pre)release.