“please select a viewer node before pressing play”??

[James Treweek]

Hello Guys,
I just opened a file created with Blender 3.5 (a simple rigged/animated character) in Blender 4.1 and I get the error:
“please select a viewer node before pressing play” when I try to play the animation.
I’m a bit stumped as to where I need to add the viewer node and can’t really find any information in Google.
I have node wrangler installed. I’m sure it’s an easy fix? (please tell me it is!)
Thank you!

[Martin Bergwerf]

Opening old files in newer versions can cause all sorts of problems (although it very often just works).

Maybe you can provide a link to your .blend file, so we can see what that error is all about.

[James Treweek]

Hi,
Yes, I guessed as much 🙂 I was trying to see if I could make use of some updated addons with an old file.
Here’s a link to the file that works fine in 3.5:

https://drive.google.com/file/d/1BQO4K8DHllIFgTfiUBOMRQCul6DRlUnu/view?usp=sharing

[Martin Bergwerf]

Hi James, I don’t get that warning in 4.1 and the animation seems to play fine.

There are a bunch of errors about Shapekeys (invalid from pointers, key will be deleted) and Drivers, but those are the same in 3.6 and 4.1 (sorry, didn’t have a 3.5 lying around..)

[James Treweek]

Ah, how strange. I got those shape key errors too but the file won’t play.

[James Treweek]

Found the issue! It seems to be an issue with the Turbo Tools addon. I disabled it and it works fine.

Thank you!

[Martin Bergwerf]

Ah, good to know!

(Always those sneaky Addons 😉…but actually, I heard about more problems that were caused by Turbo Tools 🤔)

[Omar Domenech]

[James Treweek]

If it’s of use to anybody if they use Turbo tools, apparently this was a bug which was quickly fixed in an update the next day.
So if anybody encounters the same things, update and restart Blander and it should be ok.

🙂

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