Comment # 2 on bug 1036439 from Daniele Tombolini

Hi, follow these steps:
Start Ardour->New Session.
Add new midi track, open Mixer window. There are 2 plugin loaded: a-Reasonable
(default synth) and Fader. Right click and follow the attached screenshot.

After selecting Zyn, a popup ask for: Add or Replace a-Reasonable. Both options
lead to crash.

Maybe you need to install zyn ?!?

I have:
zynaddsubfx-dssi-2.5.4-2.10.x86_64
zynaddsubfx-lv2-2.5.4-2.10.x86_64
zynaddsubfx-common-2.5.4-2.10.noarch
zynaddsubfx-vst-2.5.4-2.10.x86_64
zynaddsubfx-2.5.4-2.10.x86_64


Thanks,
Daniele.