When Uploading Hundreds of Images, Undefined Index Error

I have about 1000 images that I need to upload. I received the error below when trying to upload all them at once.

Notice: Undefined index: status in filefield_sources_plupload_element_value() (line 140 of /sites/all/modules/filefield_sources_plupload/filefield_sources_plupload.module).
Upload of imagename.jpg failed.

So I started in smaller batches. 150 images at once worked as it should. I saved the node, waited for all the images to generate, then tried to upload 150 more and then still received the above error. All the images are saved for web and below my upload_max_size (200MB) and post_max_size (400MB). So each upload has about 10MB only uploading at once. The PHP memory limit is set to 128MB.

I decided to do even smaller batches then, about 75 images. Now the images look like they upload as they should but do not appear as thumbnails on the edit page like the other images. Then, when saving the node the error message below appear.

The content on this page has either been modified by another user, or you have already submitted modifications using this form. As a result, your changes cannot be saved.

Now the node is corrupted it seems as it will not save properly when editing anything else on the page. It also throws the node as unpublished and will not let me make it active. No error logs.

Any thoughts?