[DCPower] Channel not allowed when using multiple channels

[Basjong53]

Hello, I have a simple setup with 2 source meter units (PXIe 4141 and PXIe 4112). I use the latter to push a current and with the first I measure 4 channels simultanously.

I have the output in sequence mode and measure this sequence by putting the Measure Record Length equal to the number of sequence points (the measurements are short, ~1 s). This requires the "Measure When" property to not be on "On Demand" so i have to change. However I always get the same error:

Property Node (arg 2) in RLP.lvlib:RLP Main.vi <ERR>
IVI: (Hex 0xBFFA0045) The channel or repeated capability name is not allowed.

Attribute: NIDCPOWER_ATTR_MEASURE_WHEN, Channel: 0

Here is a VI snippet of my setup, nothing special:

Does anyone know what the problem is?

Or is my strategy wrong to start with? Is there a better way to measure what I want? If so, please let me know!