Importing Image Files - Error: "invalid Backend Response. Data Is Not Json."

I've created some new images to upload via the File editor - created the same way as previous ones that loaded ok - but today the upload fails and I get this error message:

"Invalid backend response. Data is not JSON."

If anyone has any thoughts? Much appreciated,


Disregard - I logged out of administration and logged back in - error disappeared


I'm getting the same error (and logging out and back in makes no difference). It definitely seems to be a file size problem tho, if I upload a small .zip or say 40 image files, it's fine. Anything larger, I get the error....

Any other ideas out there?


Please post this issue to the bug tracker and provide CS-Cart team with the zip file