I'm still testing Mars Edit for a 'magazine style' photoblog (on a self hosted WordPress site) and using WP's 'post-thumbnails' feature to create and display a thumbnail image on the main page (index.php) for each post.
To automate the production of the thumbnail, I use the 'Auto Post Thumbnail' plugin http://wordpress.org/tags/auto-post-thumbnail?forum_id=10 which creates the thumbnail from the first image in the post.
This works perfectly if I use the login to the WP control panel on the site, but when I use ME, I get duplicates of both the original file and the thumbnail.
For example: (in the WP Uploads folder)
There is obviously some conflict between the plugin and MarsEdit, but I'm at a loss as to what it could be?
[I posted this on the Mars Edit support pages here:
and received this advice, but I have no idea if this could be the case.. can anyone help?
I've had this problem when WordPress didn't have enough memory to upload an image. Sometimes when you are just on the edge, I had to upload twice and you get two images.
My _guess_ is that the upload works fine, but then a PHP process that creates the resized image exceeds the memory causes a failure in the XML-RPC process due to insufficient RAM in PHP but the upload has worked just fine.
I've since changed my wordpress configuration to allocate 64M and now 96M so that I can reliably upload images - in my case, I also run them through smush.it with a plugin to reduce image size.