Cannot Play Home DVD

Ingredients of my problem:
Hardware:
NEC DVD+RW ND-6650A
HP DVD+R 16xWindows XP

Software:
.wmv file type (.jpg pictures & .wma audio)
Windows Movie Maker
Click 'N Burn CD & DVD

I created Windows Movie Maker .mswmm project file. From there, I saved it as a wmv movie file; everything went well. I tried burning it using both Windows Movie Maker & Click 'N Burn CD & DVD software. This also went well.

When I tried to play to play each of them on to two different DVD players, I get this message:
“Disc Error:
Playback Feature may not be availble on this Disc.
please eject the disc.”

Anybody know what I did wrong?

Thanks!