Data loading error in 2 channel input to 1 channel output labelfree

Hi @benjijamorris , I'm still figuring out how to do a multi channel input to a single channel output. To me it seems that my configuration settings are correct but I might be wrong. Can you help me point out if I'm missing out any configuration changes. I have my input image in the source column which is a 2 channel image. And target column has a 1 channel image.

`spatial_dims=3, raw_im_channels=2`

for source column:
```
dimension_order_out: CZYX
channel_dim: -1
```

for target column:
`dimension_order_out: YX`

I'm getting the following error currently which looks like I'm not loading the dimensions in correct order.
`ValueError: Crop size [32 32] is too large for image size [ 1 96]`

Input image's info: it's a 2 channel 96x96 image