No rotary controls (inc/dec buttons) in Q400

I'm setting up my controllers with the latest profile for the MJC-Q400 and all buttons and switches work, but everything that translates to a rotary knob (CRS, HDG, ALT, NAV Source) doesnt respond in the cockpit. I tried several rotary dials (the type that send button presses for up and down, I dont know the what they're actually called...), as well as actual buttons, from several controllers (Rotaries from Saitek Radio dials 8x, Saitek Multi panel, VRI MCP Combo, as well as buttons on the same, plus a VRI T&T panel) and tried every control-function I could find in LINDA (From Saitek section, Default FSX section and of course MJC-Q400 profile, version 2.3), but nothing moves the corresponding controls, or changes any value, in the cockpit...

I checked the LINDA console and i get an error saying: [E] *** LUA Error: E:\Prepar3D v3\Modules\linda\system\events.lua:76: attempt to concatenate a nil value.

And another one, saying: [E] *** LUA Error: E:\Prepar3D v3\Modules\linda.lua:76: attempt to concatenate a nil value.

Could someone please help me out?

I'm using LINDA 2.6.7