we experience a problem with the IMCE image browser after updating our Drupal core to 7.29.
When selecting certain images from the file browser for an image field which is tagged as mandatory, the AJAX POST gets resolved normally, but the user interface throws an error which tells me to choose an image for this field.
The peculiar thing is that it works with some images, and doesn't work with other images. I can reproduce this error dependably.
When I download the image from the server and upload it using IMCE's upload function, it works just fine. It's just when choosing it from the browser that the error gets displayed for some images.
Hope anyone can help me out here, I'm happy to give more informations should questions arise.