Oolite test release 1.74.2

[JensAyton]

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   vEnvTexCoord.x = r.x/m + 0.5;
   vEnvTexCoord.y = r.y/m + 0.5;

it's written as vEnvTexCoord.s & vEnvTexCoord.t at the moment, maybe the fragment shader doesn't like that?

That definitely will not make a difference. However, for efficiency it should be written:

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vEnvTexCoord = r / m + 0.5;

Repeating identical calculations for different components of the same vector is always the Wrong Thing. (The driver’s shader compiler ought to fix this for you, but it’s not guaranteed.)