Under WP 3.5.1, I am having the following issues uploading files:
When adding images to posts using any method (drag and drop or browsing), after selecting the file, this error appears after a couple of seconds:
"Error <filename>.jpg An error occurred in the upload. Please try again later."
oddly enough, the files ARE uploaded and can be seen if I access the Media library from the right-hand pane.
I am not sure if it is connected, but another issue is that I can not use the media library to add images to posts, as they do not show up: the media library is a blank, white screen.
I have tried almost everything: all plugins were deactivated, the theme was set to default, debug mode was turned on from the wp_config file [no errors were shown]. I would greatly appreciate any help I could receive.