naoki
By "go down", do you mean SKYBOX crashes?
If so, after the crash, please send us the log file located at Android/Data/xyz.skybox.player/Files/PersistentData/OutLogs.txt.
We could not analyze the issue from the log file you previously sent.
Regarding Serviio, in which folder do you see the movie?
Please guide us through the process which could help us recreate the problem.
Thank you for your support.