MuLab 10.2.29 beta
- KVRAF
- Topic Starter
- 13851 posts since 24 Jun, 2008 from Europe
Some plugins output a very low level signal to avoid denormalised floats.
Just as a test, try increasing the threshold to eg. -90 dB.
Does that make a difference?
Also note that the process LED dimming is very subtle.
Just as a test, try increasing the threshold to eg. -90 dB.
Does that make a difference?
Also note that the process LED dimming is very subtle.
- KVRAF
- Topic Starter
- 13851 posts since 24 Jun, 2008 from Europe
Then it must be about a different issue.jd88 wrote: Tue Apr 28, 2026 2:33 pm "Fixed a serious timing issue on the output events coming from a VST3 plugin." <-
BUT: in the actual version 10.2.17 (MAC) it isn'nt fixed. (Tested with STEPIC-VST from Devicemeister). The same bug like I wrote you a long time ago. (delayed Midi-Output while MuLab is in recordmode)
I'll try to find the time to check it.
- KVRian
- 975 posts since 21 Feb, 2015
Hey, MuTools, just keep up the thankless work, will ya?
Super Sonic!!

Super Sonic!!
- KVRian
- 1124 posts since 30 Oct, 2013 from Scarborough
It seems that from Mulab 10.2.17 onwards mulab is less tolerant of older files. I cannot load anything saved before about April 2022. Loading and resaving these files in mulab 10.2.16 or earlier seems to fix this. These are files which I had previously upgraded using mulab 8.
This is the mesage I am getting:
This is the mesage I am getting:
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https://rjsemper.wixsite.com/website
One Synth Challenge - https://sites.google.com/site/kvrosc/about
One Synth Challenge - https://sites.google.com/site/kvrosc/about
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- KVRist
- 374 posts since 13 Sep, 2011 from UK
Thanks. That has worked. Also, it was an older project I was having the issue with, started with version 10.1 I think. I had to re-load the plugins for the change to be recognised.MuTools wrote: Sat May 02, 2026 7:51 pm Some plugins output a very low level signal to avoid denormalised floats.
Just as a test, try increasing the threshold to eg. -90 dB.
Does that make a difference?
Also note that the process LED dimming is very subtle.
- KVRAF
- Topic Starter
- 13851 posts since 24 Jun, 2008 from Europe
Thanks for reporting this Richard!RichardSemper wrote: Sun May 03, 2026 8:13 am It seems that from Mulab 10.2.17 onwards mulab is less tolerant of older files. I cannot load anything saved before about April 2022. Loading and resaving these files in mulab 10.2.16 or earlier seems to fix this. These are files which I had previously upgraded using mulab 8.
This is the mesage I am getting:
Clipboard 3.jpgClipboard 2.jpg
I indeed have been working on something version related, something future oriented, but so it turns out i missed a legacy case. Will be fixed in the next update.
- KVRAF
- Topic Starter
- 13851 posts since 24 Jun, 2008 from Europe
Glad to hear it's resolved.mgiambro wrote: Sun May 03, 2026 8:50 amThanks. That has worked. Also, it was an older project I was having the issue with, started with version 10.1 I think. I had to re-load the plugins for the change to be recognised.MuTools wrote: Sat May 02, 2026 7:51 pm Some plugins output a very low level signal to avoid denormalised floats.
Just as a test, try increasing the threshold to eg. -90 dB.
Does that make a difference?
Also note that the process LED dimming is very subtle.
But i'm a bit confused by your last sentence.
Is that about a change in "Threshold Time" or in "Silent Output Threshold dB" ?
Can you please explain the (unexpected) need for reload in more detail.
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- KVRist
- 374 posts since 13 Sep, 2011 from UK
Sure. Sorry for the lack of detail. So, initially I had an existing project with five tracks/racks with synth plugins - Repro x 2, Zebra, Hive, Diva. The smart bypass was not kicking in at all. I then followed your suggestion of changing the Plugin Silent Output Threshold value to -90dB. The smart bypass still did not happen when the synths were idle. I then tried copying the racks to a brand new project to see if that made a difference. Still didn't work. I then isolated one rack and replaced the synth plugin i.e. reloaded a new instance of the same plugin. The smart bypass then worked. I had to do this for each of the five plugins.MuTools wrote: Sun May 03, 2026 9:47 amGlad to hear it's resolved.mgiambro wrote: Sun May 03, 2026 8:50 amThanks. That has worked. Also, it was an older project I was having the issue with, started with version 10.1 I think. I had to re-load the plugins for the change to be recognised.MuTools wrote: Sat May 02, 2026 7:51 pm Some plugins output a very low level signal to avoid denormalised floats.
Just as a test, try increasing the threshold to eg. -90 dB.
Does that make a difference?
Also note that the process LED dimming is very subtle.
But i'm a bit confused by your last sentence.
Is that about a change in "Threshold Time" or in "Silent Output Threshold dB" ?
Can you please explain the (unexpected) need for reload in more detail.
I hope that clarifies it.
- KVRAF
- Topic Starter
- 13851 posts since 24 Jun, 2008 from Europe
Thx for your reply.
I made a project in MuLan 9.5 using a VST3 and setup its Auto Bypass to 500 ms. Auto Bypass worked as expected.
I then opened that project in MuLab 10.2.18.
The VST3 plugin's Auto Bypass also worked as expected just like in in MuLab 9.
So i'm still confused about what steps i have to take to repeat the case you encountered.
I'm zooming in on this as it is unexpected that you have to reload plugins in order to make the Auto Bypass to work.
I made a project in MuLan 9.5 using a VST3 and setup its Auto Bypass to 500 ms. Auto Bypass worked as expected.
I then opened that project in MuLab 10.2.18.
The VST3 plugin's Auto Bypass also worked as expected just like in in MuLab 9.
So i'm still confused about what steps i have to take to repeat the case you encountered.
I'm zooming in on this as it is unexpected that you have to reload plugins in order to make the Auto Bypass to work.
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- KVRist
- 374 posts since 13 Sep, 2011 from UK
I think it was version 10.1.23 I created the project with. The plugins are all CLAP. I tried creating a new project in 10.2.18 and adding a CLAP plugin rack and it worked fine. I'll keep an eye on it and if I can find consistent steps to reproduce, I'll let you know.MuTools wrote: Sun May 03, 2026 11:43 am Thx for your reply.
I made a project in MuLan 9.5 using a VST3 and setup its Auto Bypass to 500 ms. Auto Bypass worked as expected.
I then opened that project in MuLab 10.2.18.
The VST3 plugin's Auto Bypass also worked as expected just like in in MuLab 9.
So i'm still confused about what steps i have to take to repeat the case you encountered.
I'm zooming in on this as it is unexpected that you have to reload plugins in order to make the Auto Bypass to work.
- KVRAF
- Topic Starter
- 13851 posts since 24 Jun, 2008 from Europe
- KVRist
- 121 posts since 7 Apr, 2008 from germany
Oh, I forgot to mention that I'm aware of this and the plugin has been working for me in MuLab for a long time?
However, in forums and user requests, I keep reading that many other users simply don't know this (just like with other things within MuLab) and wouldn't need to ask/know it if MuLab simply adhered to a few more standards. For example (in this case) , taking the "Info.plist" into account on Macs (increasingly replacing the Pkg file on Macs).
-> PS (simply formulated:): I also like it if there is currently still a pkg, because it is more obvious on MAC-OS that it is a VST. <-
- KVRAF
- Topic Starter
- 13851 posts since 24 Jun, 2008 from Europe
MuLab does not look for a PkgInfo or Info.plist.
MuLab uses CFBundleCreate with the plugin file path and uses the returned CFBundleRef to continue opening the plugin.
If CFBundleCreate fails because of a missing PkgInfo while info.plist could also identify the folder as a bundle then isn't that an issue in MacOS's CFBundleCreate function?
MuLab uses CFBundleCreate with the plugin file path and uses the returned CFBundleRef to continue opening the plugin.
If CFBundleCreate fails because of a missing PkgInfo while info.plist could also identify the folder as a bundle then isn't that an issue in MacOS's CFBundleCreate function?
- KVRist
- 121 posts since 7 Apr, 2008 from germany
For simplicity's sake:MuTools wrote: Mon May 04, 2026 10:06 pm MuLab does not look for a PkgInfo or Info.plist.
MuLab uses CFBundleCreate with the plugin file path and uses the returned CFBundleRef to continue opening the plugin.
If CFBundleCreate fails because of a missing PkgInfo while info.plist could also identify the folder as a bundle then isn't that an issue in MacOS's CFBundleCreate function?
When testing within 14 DAWs (MAC-OS), I have actually found another DAW that seems to be a bit sensitive in terms of missing pkginfo.
Before we all puzzle and thus a possibly necessary fix within these DAWs has time:
ReNoise (Eduard) has agreed: With the next "ReNoise Redux" update, this plug will install a pkg.info again.
- KVRian
- 975 posts since 21 Feb, 2015
Zebralette 3, CLAP version does not communicate mouse movements at all...but the VST3 version works.
