I have a file upload page which uses AJAX to upload three versions of a print document and process them into an image library. The files are uploaded one at a time in the order PDF, JPG, ZIP. The PDF and JPG files are being accepted and moved into the folder for processing but the ZIP file fails after completing the upload. All three files have exactly the same name except for the extension. The error log is listing two errors, a "no such file or directory" error and an "unable to move file" error.
Is there reason that it would reject ZIPs but not PDFs and JPGs? PHP version is 5.3.3.