Dan, 
Do you have any code snippets or examples that I can use when debugging MLT to save an image buffer to a file, so I can view what the image looks like at various places inside MLT?  For example, during filter processing (i.e. the affine filter), image buffers are passed around and modified, and debugging this kind of bug is quite tricky without seeing what is happening.  Any advice would be appreciated.

Thanks!
-Jonathan