I'm also having trouble with my maxx. It started 2 days ago. I'm using the standard messaging app that came with the phone. Says it's sending texts for hours on end and I they never send. Seems I'm also not receiving some texts either. The notification " unfortunately messaging has stopped" comes up more than the app. Have also seen "Motorola.com has stopped" also. I have restarted the phone, cleared cache, deleted unused apps, and done a soft reset numerous times to no avail. I use my phone extensively for work and a fix would be appreciated!
Is there another option other than being required to download all the group messages individually. This drives me crazy. Why do I need to do this? Mine gets stuck as well and says it's sending.