EQ10Q GUI does not open

I can load EQ10Q (5:2.2-1kxstudio1 from KXStudio repos) in Ardour (official version), but the GUI does not open. I see

suil error: Unable to open UI library /usr/lib/lv2/sapistaEQv2.lv2/gui/eq10q_gui.so (/usr/lib/lv2/sapistaEQv2.lv2/gui/eq10q_gui.so: undefined symbol: _ZN4sigc9slot_baseC1EOS0_)

in the terminal.

The GUI does open in carla and with

jalv.gtkmm http://eq10q.sourceforge.net/eq/eq10qs

I chatted with falkTX and he seems to think is a gcc4/gcc5 problem.

I’m running Debian Sid.

Any ideas or suggestions?

I had the same problem … it has todo with the gcc …
Go to the EQ10Q Website and download their binary installer … choose gcc5 when asked on installation.

It will copy the files to /usr/local/lib/lv2 …
Depending on your Linux you might wanna copy the .lv2 folder of eq10q to the /usr/lib/lv2 folder and restart ardour

Fixed it for me … hope it helps

Thanks @AlasdairMoons! It did work. I will report to KXStudio to see if there is anything that can be done.