MMS will not work on lumia 1020 with cortana turned on

[WPCentral Question]

I have a Lumia 1020 and everything was working great before downloading 8.1. Since I have downloaded and turned on Cortana, my MMS no longer works (sending photos, etc in a text message). If I turn Cortana off, my MMS works fine. I am using Straight Talk with a AT&T SIM. Any ideas how to correct this would be greatly appreciated. Thanks!

 

[lunaMay]

Can I ask what your settings are? I'm just curious because I could never get the mms to work. My phone was updated to 8.1 when I bought it. Makes me wonder if Cortina is the problem.