Just thought I'd let you know if anyone had the same problem.
I tried to play the LuLa videos from the player application and constantly got an error #14 message and the video not playing.
My OS is Windows 7 Ultimate 64 bit, Quicktime installed properly and ready to play .mov files.
What was wrong?
I selected the player application icon in its folder which in my case was:
C:\Program Files (x86)\LeapingBrain\Luminous Landscape\Luminous Landscape.exe
I right clicked it and selected properties
in the context menu, went to the compatibility tab
and marked the checkbox at "Run program as Administrator"
From there on everything was running fine.
Demanding bit of code, isn't it?