Andrew,
GG could not get this to crash.  I am still working on trying.  Was it a 32-bit system?

On Fri, Sep 18, 2020 at 9:49 AM Andrew Randrianasulu via Cin <cin@lists.cinelerra-gg.org> wrote:
I played with some effects.

Loaded my usual video (mkv)
Then I added "CompressorMulti' to just one audio track (paused).
I hit play, it worked for some time, I bring up config window, then tried to delete effect while timeline was still playing. Crash (not very informative):

 PRI_PRIME=1 LANG=ru_RU.utf8 cin
Cinelerra Infinity - built: Sep 16 2020 10:46:53
git://git.cinelerra-gg.org/goodguy/cinelerra.git
(c) 2006-2019 Heroine Virtual Ltd. by Adam Williams
2007-2020 mods for Cinelerra-GG by W.P.Morrow aka goodguy
Cinelerra is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions. There is absolutely no warranty for Cinelerra.

RenderFarmClient::main_loop: client started
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
free(): invalid next size (fast)
Аварийный останов

Adding same effect to playing timeline also *may* results in crash:

PRI_PRIME=1 LANG=ru_RU.utf8 cin
Cinelerra Infinity - built: Sep 16 2020 10:46:53
git://git.cinelerra-gg.org/goodguy/cinelerra.git
(c) 2006-2019 Heroine Virtual Ltd. by Adam Williams
2007-2020 mods for Cinelerra-GG by W.P.Morrow aka goodguy
Cinelerra is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions. There is absolutely no warranty for Cinelerra.

RenderFarmClient::main_loop: client started
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/Swimming with orca in New Zealand-JQ3mDXF3bcE.mkv
free(): invalid next size (fast)
Аварийный останов

Attached are backup session file, compressormulti's settings file and Cinelerra_rc

PS: I wonder if real midi keyboard/soft synth can be used with Synthetizer plugin...
I also think Synth interface a bit large for 1440 screen, but not sure if anything can/should be done about this .... (Other UI elements are OK, so global scaling probably not very good idea for me).
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