Validation Error and looping "Images in queue are processed..."

Hi,

I'm using the 3.0-rc2 and IE 7.6001. I created a new content type with an extra field: Ladel: Image, Name: field_image, type: file, Widget: Image_FUpload.

I had to use the Blank Extentions field patch at #450280: Blank extensions field results in no files uploadable..

When I try to create a new node of this content type, and entered a title and body, and select multiple images for upload using the flash icon, that all works fine. But when I select "Save" as it tell me to, and the images are finished uploading, I get an error (In Input format, above Image) "Validation error, please try again. If this error persists, please contact the site administrator."
Also, a drupal progressbar animation keeps showing up and disapearing with the message "Images in queue are processed...". It apears for about half a second, and disapears for about half a second.

Also, the files that I uploaded apear as they should at mysite\sites\default\files folder with a corresponding thumbnail.

If I press "Save", it will prompt me that no images have been selected and that if I press OK, that an node will be created without images. When I press OK, it stays in the same screen, but still creates a new node of my content type. I saw that someone else already reported this.

When I go to my newly created node, it lists the imagefiles as they should.

In short: I get a validation error, and the drupal progress bar "Images in queue are processed..." keeps flashing.

Kind regards,

Aron Scheffer