We have log text files produced when playing our game, which end with the extension '.log'.

Up to now it hasn't been an issue, however as of today when we try and upload one of these files and attach it to a card, it shows:

"Error - Invalid policy document or request headers!"

We have to manually edit the file extension type to '.txt' to upload files currently.

This hasn't been an issue until today, and all previously attached .log files seem to be retained.