GLSL errors

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Leadwerks

I am using shader code based on this:
http://blitzmax.com/Community/posts.php?topic=53895#602026

When I compile, I get these errors in the debug log:

Compiled: FragmentShader.glsl successfuly in 111ms

Compiled: FragmentShader.glsl successfuly in 8ms


Failed to link VertexShader FragmentShader.glsl

Vertex info
-----------
<stdlib>(9793) : error C5052: gl_FragColor is not accessible in this profile
  101

Failed to link FragShader 'FragmentShader.glsl'

Vertex info
-----------
(4) : warning C7050: "vNormal.xy" might be used before being initialized
(3) : warning C7050: "vPosition" might be used before being initialized
(0) : error C6014: Required output 'HPOS' not written

Error getting Uniform Var Location 'color' in Method setUF4

Process complete

I can run the original example without a problem.

Any ideas?