Image trouble uploading

Hi,

I have been using FTP for many years, but all of a sudden, I cannot upload images. At first, it was PNG files - the file uploads, and is present when accessing it, but the image does not show. I have asked my host about this and they say the image is corrupt. JPEGs and GIFs were fine until today - the same problem.

I have tried using Filezilla and WSFTP, but still the same problem.

Has anyone else experienced this?

Any ideas what would be causing this?

Thanks

I found out the problem - I was uploading in ASCII instead of Binary