Zip file download1 0 Browser Info Environment
I looked at the binary data and saw a blank line as the first line in the file data and this caused the zip to be corrupted.
To remove this line i removed the closing ?> tags on the file helper and the download_file controller and also had to put the following in the file helper:
before the fread section of the forceDownload method.
I am going to test the ?> tags again - i would think the flush and clean would remove any inherit carriage returns.