First off love videostream, keep up the good work!!
I got the iphone app set up on both my phone and my girlfriends phone and it worked great the FIRST time either phone was connected to the chrome app but after that we've been having trouble. You can see the video files but trying to play them results in a 'We could not connect to the chromecast. Try connecting to the device manually' error. I can open the iphone app and click on the chromecast icon and the chromecast loads up videosteam. It's just trying to play a video that produces the error.
Anyone else had the same issue? Is there any debug information I could collect to help figure out what's going on?