@jockert I would start by checking your MMS settings are correct with your provider in System Settings, Mobile, APN. There where these two issues open last year so you may want to check on those also. If after checking this and the bug reports you do not fix it I would open a new issue in the support section as this thread is a year old now and there are more recent threads on the forum.
I will lock this one now so please check everything then start a new thread if needed.
B