I finally found it and had a quick check on it. The logcat shows that veetle is waiting for some response which seems not to come and then it ends the play. A report is send in the background to veetle.com. So I guess that they are aware of the problem. Not sure if I can do anything in the ROM to solve the problem. Veetle might have a problem with Android 4.2. I saw on the Google market that a lot of users are complaining about problems.
Sorry, I don't think I can help here.
I tried it on my Galaxy Note which is running Android 4.1 (CM10 based) and Veetle works there without problems.
Unfortunately I do not have a Android 4.2 ROM for my Note yet.
Maybe the problem is a combination of Android 4.x and tablet? Or a problem of the proprietary camera drivers coming from older Android version?????
This situation occurs for several months now, I don't think that Veetle crew is aware of that because not all devices have this trouble.
Unfortunately I'm not a dev, I wonder if you can find any element to solve this strange thing.
Still: thank you for your time, in any case.