Hi and welcome to the forum
Possible causes are a bad burned disc or a wrong encoding of the movie. For example, if your standalone is not able to read NTSC format and the movie is in NTSC format, obviously the player cannot read it.
Most of times, the cause of a bad burned disc is a low quality disc or a wrong burning speed selected.
Can you provide more details? What format is the movie (PAL, NTSC, AVI, MKV, etc)? What discs are you using? What burner-firmware? What burning speed?