SMS is not getting forwarded

[david]

I am unable to forward / copy the SMS its says unfortunately messaging has stopped.

[Uliwooly]

backup your sms/mms then 

settings > apps > all > messaging > clear everything > restart your phone 

Don't forget to give Kudos

[Uliwooly]

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

Don't forget the Kudos