I'm running 4.6.2 and using the Drupal upload module. When attaching a file to a node I am sometimes required to go through the process 6 or 7 times before the attachment will stick.

Select the file and click attach and everything looks fine in the preview. Submit the changes and the attachment disappears. This does not happen every time but it's very rare that an attachment will stick first time, maybe 1 in 10.

Everything looks OK, both the files and tmp directories have permissions set to 777.

This is very frustrating….any assistance would be appreciated.