I had the same issues. To fix go here:
http://answers.ea.com/t5/STAR-WARS-The-Old-Republic/GUIDE-Launcher-Troubleshooting/td-p/4805820
And follow the steps from heading "II. Launcher Cannot Patch Itself"
Also try deleting old patch data: "C:\Program Files (x86)\Electronic Arts\BioWare\Star Wars - The Old Republic\patch" I backed my data up just in case.