Error while trying to use the acfTrain function

[cjnolet]

I am getting the error:
`
Error using cat
Dimensions of matrices being concatenated are not consistent.

Error in acfTrain>sampleWins (line 259)

Error in acfTrain (line 136)

Error in TrainAPI (line 29)

Dimension of matrices being concatenated are not consistent.
`

I thought at first that perhaps I was not properly specifying the dimensions of the model but after fixing that, I'm still getting this error. I could still be doing something though.