Hi,
just bought Satin and Presswerk and installed them on Ubuntu Studio 24.03. for use in REAPER 7.53 and Mixbus 10.
While they are both loading up and working correctly in Mixbus, both plugins (VST3 and CLAP) crash REAPER after inserting them in a plugin slot. Protoverb (VST3) is working fine.
After using the search function here and on the REAPER forum, I've tried a couple of things like using a Wayland session instead of X11, but to no avail. This is happening on my laptop and desktop.
I've used the included install.sh script to install (and reinstall) the plugins, all files in the respective plugin folders and .uhe folder seem to be included.
After starting REAPER from terminal, I have attached the output after the crash here.
Please help me interpret this to get these working.
Thanks in advance,
fllr
Satin/Presswerk crash REAPER after insert
- KVRer
- 3 posts since 13 Nov, 2021
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Proverbial kid on a laptop with headphones

REAPER 7/Harrison MIXBUS 10 on Ubuntu Studio
https://kurzelinks.de/LinuxBlogEN
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tasmaniandevil tasmaniandevil https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=62450
- KVRAF
- 2171 posts since 22 Mar, 2005 from a planet called u-he
Best to get in contact with our support, so we can help you find the reason for the crash.
https://u-he.com/support/#contact
https://u-he.com/support/#contact
That QA guy from planet u-he.
- KVRer
- Topic Starter
- 3 posts since 13 Nov, 2021
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Just did that, thanks!tasmaniandevil wrote: Wed Nov 19, 2025 10:44 am Best to get in contact with our support, so we can help you find the reason for the crash.
https://u-he.com/support/#contact (https://u-he.com/support/#contact)
Proverbial kid on a laptop with headphones

REAPER 7/Harrison MIXBUS 10 on Ubuntu Studio
https://kurzelinks.de/LinuxBlogEN
-
neverbeeninariot neverbeeninariot https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=350084
- KVRian
- 1079 posts since 3 Feb, 2015 from UK
Hi,
Not sure if you got your issue sorted yet, there's another post in this forum about a crash with Diva and Tyrell that has the same error message you get with Satin and Presswerk. They are also running Ubuntu Studio 24.03.
The last few lines of their error log is the same as yours.
As I said in the other thread, I'm not a Linux expert, but a quick search for "terminate called after throwing an instance of 'std::runtime_error'
what(): locale::facet::_S_create_c_locale name not valid" returns several hits where other folks have had the same problem using completely different software. e.g.
https://forum.sinusbot.com/kb/i-get-an- ... do-i-do.23 - mentions that on some Debian based distros, the locales are not fully generated. There is a possible solution in that post, but be sure to change the locale to the one you need before trying this.
I know you reached out to support, so hopefully you got this fixed already, but just in case you didn't...
For what it's worth, I just finished installing all U-he plugins on a new (stock) Debian Trixie / KDE build (6.12 kernel) yesterday. All plugins are working in both Reaper and Bitwig, in a KDE Wayland session with Pipewire as the audio server.
Not sure if you got your issue sorted yet, there's another post in this forum about a crash with Diva and Tyrell that has the same error message you get with Satin and Presswerk. They are also running Ubuntu Studio 24.03.
The last few lines of their error log is the same as yours.
Code: Select all
Running View with AudioMan access.
AM_ViewMan::initialize
terminate called after throwing an instance of 'std::runtime_error'
what(): locale::facet::_S_create_c_locale name not valid
Aborted (core dumped)what(): locale::facet::_S_create_c_locale name not valid" returns several hits where other folks have had the same problem using completely different software. e.g.
https://forum.sinusbot.com/kb/i-get-an- ... do-i-do.23 - mentions that on some Debian based distros, the locales are not fully generated. There is a possible solution in that post, but be sure to change the locale to the one you need before trying this.
I know you reached out to support, so hopefully you got this fixed already, but just in case you didn't...
For what it's worth, I just finished installing all U-he plugins on a new (stock) Debian Trixie / KDE build (6.12 kernel) yesterday. All plugins are working in both Reaper and Bitwig, in a KDE Wayland session with Pipewire as the audio server.
