It has recently come to my attention that version 0.7.1 might be broken. Apparently the image directories in the wp-content/upload directory are not being created upon installation. I am currently looking into this and will be releasing a fixed version soon. If anyone has any information or specific use cases as to when or ideas why this is happening it would be deeply appreciated if you could help shed some light on the issue. Thanks for your patience with this major bug, I really want to get a stable and usable version of the plug in up as soon as possible but my paying work must come first. No electricity no CataBlog, you feel me?
If you are getting an error saying that the uploaded file could not be saved make sure these two directories are in your WordPress uploads directory:
wp-content/uploads/catablog/originals/
wp-content/uploads/catablog/thumbnails/
Cheers,
Zach