Gigedit seems broken

[CG3D]

Hello!

I (noob) tried using gigedit with LinuxSampler (both from the KXStudio repo) but I cannot get them to work.
On startup, LinuxSampler reports 'undefined symbol: _ZN12LinuxSampler6Thread10DestructorEv'...

I have tried it on Linux Mint 18.2, Ubuntu 17.10, Ubuntu Studio 17.04, Debian 9 KDE and even Debian 8.5 Jessie KDE.
On all but the latter I have installed the GCC5-repo as well.

The only combination that worked was Debian Jessie 8.5 KDE with the (old) binaries provided by linuxsampler.org.

Is gigedit supposed to work with linuxsampler in KXStudio or are they obsolete?

Thanks and greetings,
CG3D