I recently purchased the shoryuken costume pack for SF4. Ever since I installed the pack, I have been getting an error when I go to “network battle”. It simply says “Lost connection to playstation network.” Any ideas?
hmmmmm that’s wierd maybe contact sony as they may not be aware of this issue, and it may require another firmware update to fix. Can you connect to the internet ok? if not check your internet settings first and do a connection test as that may explain what the issue is 
I’ve had this happen before. It resolved itself after a day or two.
I changed my password and it seemed to fix itself. Thanks for the suggestions.