Sun Datablock Ignored

I posted this on a public Torque engine forum, which was probably not the best place, so posting it here as well:

This may be a newb question, but I've done several forum searches and haven't found the answer:

When I make changes to the sun datablock in my mission file (color and ambient values), those changes don't appear to take affect - the scene is still lit the same as before. Whether I make the changes to the mission file by hand then restart the application, or if I use the world editor inspector and hit apply, the scene lighting remains the same. (By the way, the scenes we have are mostly DTS files with receiveSunLight = "1" and receiveLMLighting = "0", no interiors, with a skybox and maybe terrain - and Sun is currently the only lightsource, and it is the sun lighting on the objects (DTS) that I'm not seeing a change)

Torque appears to be using some default sun value and ignoring my settings. There have been a few (very rare) occasions that Torque will use my settings, but generally it appears to be using some "default". I did read in a forum thread that if you make the color and ambient too dark, Torque might decide to use a default, but that didn't seem to matter either. Here is my sun datablock that is apparently ignored:

new Sun() {
azimuth = "10";
elevation = "45";
color = "0.500000 0.500000 0.500000 1.000000";
ambient = "0.100000 0.100000 0.400000 1.000000";
locked = "false";
scale = "1 1 1";
position = "0 0 0";
rotation = "1 0 0 0";
direction = "0.57735 0.57735 -0.57735";
};

And an example TSStatic object loaded via the mission file as well:

new TSStatic() {
position = "0 0 0";
rotation = "1 0 0 0";
scale = "1 1 1";
shapeName = "./Assets/test.dts";
receiveSunLight = "1";
receiveLMLighting = "0";
useAdaptiveSelfIllumination = "0";
useCustomAmbientLighting = "0";
customAmbientSelfIllumination = "0";
customAmbientLighting = "1.000000 0.000000 0.000000 1.000000";
};

I've changed all the values on the sun datablock a hundred times to what should be reasonable values but nothing makes a difference. Any help is appreciated.