I could not download any of the art you have uploaded. It says Zip are blank ...can't be extracted....

I had the same problem when I downloaded some files yesterday. Basically, it looked like the file download paused, then resumed, but the completed download would end up being smaller than it should be (for example, 19.7 Mb instead of 19.9 Mb). Those were the tell-tale signs that the .zip would be corrupt. I managed to get the files in the end by only downloading one thing at a time (so that it downloads faster and is less likely to pause). Beyond that, I've no idea what's up.

In any case, it's not a problem with any specific file.