send Fax uploads not created in /tmp folder

hi all.

Im having a problem with the feature to send faxes through the webinterface,
the issue is that the tiff files arent created in the /tmp dir.

Asterisk 1.4.30
PBX Manager 6.1.1.5,

i have a other thirdlane server that has exactly the same asterisk and thirdlane versions, and the same modules are loaded.