Blending issues on flattenAll

[newsbubbles]

So, I went to flatten my xcf using the flattenAll function and it seems certain blending modes for images are not supported.

WARNING 61 is not currently supported!
WARNING 53 is not currently supported!
WARNING 51 is not currently supported!
WARNING 61 is not currently supported!

In my project I am creating unique images by turning certain layers on or off so that when I flatten the final list of layers, everything blends properly. But I am definitely using some exotic blend modes like:

• Overlay
• Multiply
• Vivid Light (working it seems)

It seems that a layer with Normal blending mode placed over a layer which uses Multiply produces incorrect artifacts... so with those blend Modes is this what it is talking about?

How would I go about making this work properly? Perhaps the warning codes above correspond to blend modes? If so I'd like to have a go at creating the functions for those modes. I'm trying to get acquainted with the code right now to find where I can help.