RGB lights not responding to dimmer properly

[ftdenhollander]

Hi,

I have this odd problem where 6 RGB lights do not respond to the dimmers in the same way.
They each have their own DMX adress.
2 of them respond properly
2 do not respond at all
2 respond by dimming only 1 colour.

I've tried to add pictures in the attachment, but that doesn't seem to work... any tips?

[ftdenhollander]

Update,

I found an old version of this file. The dimmers work properly there.
Still i don't have a clue how this can occur.