Hi Michael,
The update is out, I have made a few major changes, currently working on the remaining documentation for the major new features (attachment content indexing, synonyms and Live results page loader).
The date filter issue and the image caching/cropping issue should be resolved now. Although I did find another related problem, just today, where the default image does not apply on missing images for non custom post type results. I also adjusted a bit the isotopic row calculation script, I’m not sure if that changes anything.
Attachment to parent is not yet implemented, I postponed it to the upcoming minor/bugfix release.