Images don't upload in gallery

Hi,
My name is Cosmin and my website is: http://cosmindanilaphotography.com/
I’m trying to upload images in a new gallery. I tried the multiple file uploader for 70 images, but form 54 onwards it didn’t upload them anymore.
I Tried again with a new gallery and it stopped at number 49.
I get this message for all the files that have not been uploaded:

“Destination International Lifestyle Photography Engagement Portraits Cosmin Danila 50 pictures 01.jpg” has failed to upload due to an error
The uploaded file could not be moved to wp-content/uploads/2014/03. “

I tried browser uploader one by one, but it didn’t seem to work either.

Can you please help!?

Than you in advance!