Weird messages, maybe tihs time different reason, but
first: switch somewhere that "strict standards" to less strict
second: try to decrease php version to 5.3.x.

I am afraid that's not all. Wordpress database contains many urls leading to your old site (for example home and siteurl addresses in wp_options, column guid in wp_posts.
You have to change them in phpmyadmin.
In wp_options you can change this manually, but for wp_posts
you will need something like
update wp_posts set guid = replace(guid, 'picbreeze', 'picturebreeze');

Now your images links to your old site, for example this image:
picturebreeze.com/stock/photos/image/group-of-children-preparing-livestock-animals-for-stock-show-2/
has picture from here (after right-click on show image):
picbreeze.com/wp-content/uploads/symbiostock_rf_content/4213-group-of-children-preparing-livestock-animals-for-stock-show.jpg

Folder symbiostock_xml_cache can be empty, there is no need to copy all files. Now limit for number of files in cache is set to 50000. Files above this limit are deleted once a day.

Maybe try this:
Edit slugs of ALL categories to something like "animals-images", "nature-images" and so on, to avoid conflicts with keyword slugs.
Then go to Stock Images->image keywords in admin area, find and edit all keywords slugs, that end with -2 or other number. Change slug animal-2 to animal, nature-2 to nature and so on.

Great images, but better edit prices in admin panel. Now you have 0.02, 0.05, 0,08, 0.18. For example, if you want 18, enter 18.00 there.
Of course I've already added your site to http://symbiostock.info

Edit: Now it is ok.

Imagenomad: Something spoils network results, there is some js code added at beginning. I did some search, and this can be Discus plugin. Do you have it installed?

We should remember, that now in Symbiostock sites, many carts can be abandoned not by customers, but by other artists, maybe future Symbiostockers. They don't want to buy anything, but only want to see how it works

Processing works fine.

In processing time memory is needed for resizing, and after resizing, for adding watermark. Maybe last phase of processing fails. Deactivating plugins should increase available memory.

deleted

The full size images are stored in symbiostock_rf.

Which brings up a question, which folder are images that have been purchased stored in?

There is no separate folder for purchased images. In database there is only info, which images have been purchased, so when user goes to his "customer management area", he sees purchased images as thumbnails with download buttons, and each time he clicks on that button, Symbio code takes full size image from symbiostock_rf folder, resizes it (if purchased smaller than large) and sends to user.

Now plugin shows red "EDITORIAL USE ONLY" messages, when image has category Editorial.
Message is shown on the right side of image. I could display it under image, but I'd like to avoid possible conflict with other plugins, which will do something in image page too.

Example:
http://ajotte.com/image/statue-of-liberty/

If you need this functionality, uninstall previous version and install 1.1