Issue with an lv2 plugin

Hello Ardour Devs.

I wrote a fluidsynth front end that functions as a stand alone application
as well as an lv2 plugin.  It's built using gtk3 and gtkmm.  It turns on
and works good with "jalv.gtk3" (screenshot 1)  but when I try to load it
in ardour3 nothing renders and there isn't any output from the console
showing an error(screenshot 2).  Does ardour3 not support plugins that were
built with gtk3 or gtkmm3 or do you have a suggestion for how I can further
debug to get it working in a3?

Thanks for your help.
Bill.

console output

[bill@billbrown ~]$ ardour3
bnd txt domain [gtk2_ardour3] to /usr/share/locale
Ardour3.5.378 (built using 3.5-378-g16a8762 and GCC version 4.9.0 20140507
(prerelease))
ardour: [INFO]: Your system is configured to limit Ardour to only 4096 open
files
ardour: [INFO]: Loading system configuration file
/etc/ardour3/ardour_system.rc
Loading user configuration file /home/bill/.config/ardour3/ardour.rc
Using SSE optimized routines
/usr/share/themes/Clearlooks/gtk-2.0/gtkrc:77: error: unexpected identifier
'reliefstyle', expected character '}'

(ardour-3.5.378:2472): GLib-GObject-WARNING **: Attempt to add property
gtkmm__CustomObject_N9Gtkmm2ext25CellRendererColorSelectorE::color after
class was initialised
ardour: [INFO]: Loading default ui configuration file
/etc/ardour3/ardour3_ui_default.conf
Loading ui configuration file /etc/ardour3/ardour3_ui_dark.rc
/usr/share/themes/Clearlooks/gtk-2.0/gtkrc:77: error: unexpected identifier
'reliefstyle', expected character '}'
Found 1 along
/home/bill/.config/ardour3/templates:/usr/share/ardour3/templates
Announcement is:
run dialog
Scanning folders for bundled LV2s: /usr/lib/ardour3/LV2

(ardour-3.5.378:2472): GLib-GObject-WARNING **: Attempt to add property
gtkmm__CustomObject_N9Gtkmm2ext23CellRendererPixbufMultiE::active after
class was initialised
Creating a blank synth

(ardour-3.5.378:2472): GLib-GObject-WARNING **: Attempt to add property
gtkmm__CustomObject_GnomeCanvasLineSet::x1 after class was initialised

(ardour-3.5.378:2472): GLib-GObject-WARNING **: Attempt to add property
gtkmm__CustomObject_GnomeCanvasLineSet::y1 after class was initialised

(ardour-3.5.378:2472): GLib-GObject-WARNING **: Attempt to add property
gtkmm__CustomObject_GnomeCanvasLineSet::x2 after class was initialised

(ardour-3.5.378:2472): GLib-GObject-WARNING **: Attempt to add property
gtkmm__CustomObject_GnomeCanvasLineSet::y2 after class was initialised
instantiate EMAP lv2
making EMAP synth (fluidsynth wrapper)
instantiated EMAP lv2
activate EMAP lv2
Butler drops pool trash
PluginWindow deleted for 0x327daf0
deactivate EMAP lv2
activate EMAP lv2
deactivate EMAP lv2
Segmentation fault
[bill@billbrown ~]$

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