Tapper wrote: ↑Sun Feb 25, 2024 10:52 am
Hm... Checked in settings menu - It was blacklisted in Qtractor (and some other pluggins to). Removed from blacklist, reloaded, restarted Qtractor, It still apears in blacklisted. Maybe something wrong with plugin.
Tapper wrote: ↑Sun Feb 25, 2024 12:10 pm
Linuxmusician01 wrote: ↑Sun Feb 25, 2024 11:38 am
I have that problem too when I use YABridge (its developer is active on this forum) in Qtractor. See this topic. Apparently in Qtractor (according to Rui [Qtractor's developer] in aforementioned topic) "plugins are added to blacklist automatically if they crash or timeout on the scan process".
Now why does the scan process timeout or crash? Well, the following could be the reason. Some VST's, during scanning, want to show a dialog (nag) screen if they need a serial number to be entered or they show an error message. Since there's no input from the user to make the screen disappear it's considered to be a crash or it times out.
My workaround: manually install only the VST's that work. That is: don't let Yabridge automatically add every VST that you have to its list.
Hope this helps.
No I don't use Yabridge nor windows vst at all. Tried to look at Qtractors output in console, didn't found anything about sfiz, only some suspicious lines, something about wrong convolution frequency requires48000, but host is at 44100 (sorry, far from laptop now, can't paste here now). Very strange, because my system running at 48000. Even tried to change it to 96000, no difference. Maybe this is a part of sfizz scanning output, maybe not. Anyway, safest way I found - use only one sfizz lv2plugin per project, because if more, Qtractor hangs and crashes at opening project. And it was like that for ages.
Hmmmm. Does it help to temporarily disable the other plug-ins that Qtractor blacklists? Just to troubleshoot the problem? The plugin you want to use (Sfizz? Liquidsfz?) appears to work when Rui uses it in Qtractor. Or is that another sfz plugin (as you can see I have no experience with the sort of plugins you want to use, sorry...). I see that Liquidsfz can be compiled from source and that they offer a pre-compiled LV2 binary. Which do you use?
If Qtractor blacklists it, it ain't never gonna work of course. The only reason I can come up with why it would be blacklisted is that it wants to show a message window when Qtractor scans for it (causing a time-out). Qtractor's developer (Rui Nuno Capela, aka rncbc here on the forum) says so himself. There might be 100 other reasons why it would be blacklisted, but this is just my experience...
Good luck troubleshooting!
P.S. I tried to use Liquidsfz in Qtractor an it looks like this:
P.S.2 Is one of the plugins you actually use blacklisted or a plugin we're not talking about in this topic?