Years ago, I read that the SyFy Channel or Fox (don't remember which) was planning to make the Dragon Riders of Pern by Anne McCaffrey into a TV series or series of movies.  Was all over the place, then nothing....Does anyone know what happened?  Why they didn't or if they are ever going to?

I hadn't heard of this myself, but here's the info on Wikipedia.

It states that there was an attempt to film it in 2002 by Warner Brothers, but the script was so different from the books that the director refused to film it and rights were returned.

Rights to a filmed version were sold to Copperhead Entertainment in 2006,  screenwriter and director selected this year, and production possible next year.