I guess one patch broke plugin compilation, so plugin install now failing... 

i hope we will resolve this in 
https://www.cinelerra-gg.org/bugtracker/view.php?id=597

sorry! and thanks for catching this error twice (i think) 

On Wednesday, November 10, 2021, Andrea paz via Cin <cin@lists.cinelerra-gg.org> wrote:
I tried to make a build from git: the compilation happens without
errors (see cin5.log), but when I start CinGG I get a crash. No dumps
are formed. At the terminal I have only these lines:

build ladspa plugin index for: /home/paz/cinelerra5/cinelerra-5.1/bin/ladspa
MWindow::init_ladspa_plugins: can't create ladspa plugin index:
/home/paz/.bcast6/ladspa_plugins._home_paz_cinelerra5_cinelerra-5.1_bin_ladspa
MWindow::init_theme: prefered theme Cakewalk not found.
MWindow::init_theme: theme_plugin not found.
unjoined tids / owner 1
  00007feefd7fa640 / 00007fef46622fc0 12BC_Clipboard

I had no problems with the November 1 version.