I get this error

IMAGE FIELD

246m.jpg is not allowed for image - i used only the image name in excel 246m.jpg, is that not correct?

DATE FIELD

Input error: 28.2.2006 5:52 is not allowed for Authored on (not a date in 16.09.2011 10:42 26.2.2006 6:12:00

my date is like this 26.2.2006 6:12:00 and I set the custom date to: d.m.Y H:i, is that not correct?