Fixed the incorrect size value and the missing phrase in the next release.
When the max size was set by the upgrade script, it was saved as 0.
When the max size was set by the installer and Suhosin was turned on, it was saved as 0.
When the memory_limit setting was set to -1 or to 0, one of two default values should be used, but it was saved as 0 due to type-casting.
Additionally, in a fringe case with certain import data, it was possible to overwrite the max size with an incorrect value when importing from VaultWiki 3.
I have corrected the value on your site. Please let me know if you continue to have issues uploading.