can't upload pictures

[brucelee]

says "file invalid" but they are jpg files and same files worked few days ago but today not working.

 

[mskrotzki]

says "file invalid" but they are jpg files and same files worked few days ago but today not working.

I have the same problem and the files are well within the file size and physical size. Just for the hell of it I tried to add a picture I had previously added and got the same error message.

Please advise.