MuLab 10 Files Corrupting?
-
- KVRer
- 6 posts since 26 Aug, 2025
My MuLab 10 Files are corrupting when I save them, opening them or the backup file results in "Cannot open Project", then it launches the New template.
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
Do this:
- Restart MuLab
- Open such project that doesn't open
- After clicking the error alert, goto MuLab menu -> Tools -> Keep Log
- Quit MuLab
- Now goto your MuLab/User/LogFiles folder and zip the most recent log file, which should match the date and time you launched MuLab for this test.
- Attach the zipped log file to your reply here.
-
- KVRer
- Topic Starter
- 6 posts since 26 Aug, 2025
Here it is
You do not have the required permissions to view the files attached to this post.
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
The issue is related to Ozone 9 Imager.
This will need more research.
Until then you can try this to open the project file anyway:
If it still doesn't open then retry opening but also skip any other plugins.
This will need more research.
Until then you can try this to open the project file anyway:
- Start MuLab with a New Project
- Goto MuLab menu -> Tools -> Command Line
- Enter this command: "confirm load plugins"
If it still doesn't open then retry opening but also skip any other plugins.
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
I tried Ozone Imager 11 (the current version) and it works fine as expected here, including saving and reopening a project that is using it. Are you sure you are using the latest version of Ozone Imager?
That said, i'm still interested in your "Investigation.MuProject" file that fails to open so it can be researched more in depth.
That said, i'm still interested in your "Investigation.MuProject" file that fails to open so it can be researched more in depth.
-
- KVRer
- Topic Starter
- 6 posts since 26 Aug, 2025
It might be a saving issue, as I did a "save" then a "save as" and named it "Investigation Backup.muproject", and the backup opened, but the normal file did not. I have also overwritten the version of "Investigation.muproject" that I gave you the log of, but I've attached another project with the same issue as well as its log.
You do not have the required permissions to view the files attached to this post.
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
Thanks for the files.
Again this seems to be related to the Ozone 9 plugins. (i suspect Ozone 9 Dynamic EQ in this case).
As i wrote earlier i tried Ozone Imager 11 and that worked fine.
Maybe it's related to the Ozone 9 plugins.
I'd like to check that but they are not available anymore, right?
Again this seems to be related to the Ozone 9 plugins. (i suspect Ozone 9 Dynamic EQ in this case).
As i wrote earlier i tried Ozone Imager 11 and that worked fine.
Maybe it's related to the Ozone 9 plugins.
I'd like to check that but they are not available anymore, right?
-
- KVRer
- Topic Starter
- 6 posts since 26 Aug, 2025
Yeah, they're a legacy product, but only from 2019, and I don't really feel like spending $660 to upgrade to 11
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
I've contacted Native Instruments with a request for an Ozone 9 license so i can research this.
The next MuLab update will also do more detailed log output when loading & saving VST3 data, in order to narrow down the problem.
What about the VST2 version of the Ozone 9 plugins, does those work fine?
The next MuLab update will also do more detailed log output when loading & saving VST3 data, in order to narrow down the problem.
What about the VST2 version of the Ozone 9 plugins, does those work fine?
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
Native Instruments kindly provided a Ozone 9 research license and so i checked using Ozone 9 in MuLab 10, including saving and reopening. It all works as expected, no errors, no data corruption.
That's using Ozone 9 version 9.13.0.2768.
Are you sure to use the very latest version of Ozone 9?
If yes then please download MuLab 10.0.85 and repeat your test and if you can repeat the data corruption issue then before quitting MuLab go to MuLab menu -> Tools -> Keep Log and then email the most recent MuLab log file in your MuLab/User/LogFiles subfolder to
It's important to do the O9 saving and reloading in the same MuLab session so that this log file contains all log info about the saving and about the loading.
That's using Ozone 9 version 9.13.0.2768.
Are you sure to use the very latest version of Ozone 9?
If yes then please download MuLab 10.0.85 and repeat your test and if you can repeat the data corruption issue then before quitting MuLab go to MuLab menu -> Tools -> Keep Log and then email the most recent MuLab log file in your MuLab/User/LogFiles subfolder to

It's important to do the O9 saving and reloading in the same MuLab session so that this log file contains all log info about the saving and about the loading.
-
- KVRer
- Topic Starter
- 6 posts since 26 Aug, 2025
Sorry for being a while, I just moved to Cubase because my father bought me a license.
MuLabs is amazing, easy to learn and use with its visual mux system, I'm very torn between moving to Cubase and staying on Mulabs, but unfortunately I can only pick one for use and I have to go with Cubase as I'm working towards being a movie composer and it has the tools I need. Thanks for being so helpful as well.
MuLabs is amazing, easy to learn and use with its visual mux system, I'm very torn between moving to Cubase and staying on Mulabs, but unfortunately I can only pick one for use and I have to go with Cubase as I'm working towards being a movie composer and it has the tools I need. Thanks for being so helpful as well.
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
Thanks for sharing your current decision honestly and transparently.
Also thanks for your appreciation for MuLab.
Note that you can still use MuLab Plugin inside Cubase
Wish you good luck and lots of creative joy

Also thanks for your appreciation for MuLab.
Note that you can still use MuLab Plugin inside Cubase
Wish you good luck and lots of creative joy
-
- KVRer
- Topic Starter
- 6 posts since 26 Aug, 2025
Thanks so much, I will have a look at MuLab Plugin, I didn't know what it does, but I had a look and you can open MuLabs Projects inside it just like standalone, right?
- KVRAF
- 13861 posts since 24 Jun, 2008 from Europe
