Hi, today it seems that fs2 can't run shader and activate glsl on my computer 
(windows 7 64 bit/radeon 4870 1gb/ 8 gb ram /)
It happens with any builds that support shader... (3.6.12 3.6.13 and antipode7)
I'm not sure when it did happen first, i use to update my graphic driver monday evening.... 
here is the log from fs2o and debug build :
Initializing OpenGL graphics device at 1024x768 with 32-bit color...
  Initializing WGL...
  Requested WGL Video values = R: 8, G: 8, B: 8, depth: 32, double-buffer: 1
  Actual WGL Video values    = R: 8, G: 8, B: 8, depth: 32, double-buffer: 1
  OpenGL Vendor     : ATI Technologies Inc.
  OpenGL Renderer   : ATI Radeon HD 4800 Series        
  OpenGL Version    : 3.3.10243 Compatibility Profile Context
  Using extension "GL_EXT_fog_coord".
  Using extension "GL_ARB_multitexture".
  Using extension "GL_ARB_texture_env_add".
  Using extension "GL_ARB_texture_compression".
  Using extension "GL_EXT_texture_compression_s3tc".
  Using extension "GL_EXT_texture_filter_anisotropic".
  Using extension "GL_ARB_texture_env_combine".
  Using extension "GL_EXT_compiled_vertex_array".
  Using extension "GL_EXT_draw_range_elements".
  Using extension "GL_ARB_texture_mirrored_repeat".
  Using extension "GL_ARB_texture_non_power_of_two".
  Using extension "GL_ARB_vertex_buffer_object".
  Using extension "GL_ARB_pixel_buffer_object".
  Using extension "GL_SGIS_generate_mipmap".
  Using extension "GL_EXT_framebuffer_object".
  Using extension "GL_ARB_texture_rectangle".
  Using extension "GL_EXT_bgra".
  Using extension "GL_ARB_texture_cube_map".
  Using extension "GL_EXT_texture_lod_bias".
  Using extension "GL_ARB_point_sprite".
  Using extension "GL_ARB_shading_language_100".
  Using extension "GL_ARB_shader_objects".
  Using extension "GL_ARB_vertex_shader".
  Using extension "GL_ARB_fragment_shader".
  Using extension "GL_ARB_shader_texture_lod".
  Found special extension function "wglSwapIntervalEXT".
  Initializing Shaders Manager...
  Loading and compiling main shaders...
    Compiling main shader ->  main-v.sdr (null-v.sdr) / main-f.sdr (null-f.sdr) ... 
    Compiling main shader ->  main-v.sdr (b-v.sdr) / main-f.sdr (b-f.sdr) ... 
    Compiling main shader ->  main-v.sdr (b-v.sdr) / main-f.sdr (bg-f.sdr) ... 
    Compiling main shader ->  main-v.sdr (l-v.sdr) / main-f.sdr (lb-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (l-v.sdr) / main-f.sdr (lbg-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (l-v.sdr) / main-f.sdr (lbgs-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (l-v.sdr) / main-f.sdr (lbs-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (le-v.sdr) / main-f.sdr (lbgse-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (le-v.sdr) / main-f.sdr (lbse-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (ln-v.sdr) / main-f.sdr (lbgn-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
      Shader in_error!  Disabling normal maps and height maps!
    Compiling main shader ->  main-v.sdr (lf-v.sdr) / main-f.sdr (lfb-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (lf-v.sdr) / main-f.sdr (lfbg-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (lf-v.sdr) / main-f.sdr (lfbgs-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (lf-v.sdr) / main-f.sdr (lfbs-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (lfe-v.sdr) / main-f.sdr (lfbgse-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (lfe-v.sdr) / main-f.sdr (lfbse-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (l-v.sdr) / main-f.sdr (null-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (l-v.sdr) / main-f.sdr (lg-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (l-v.sdr) / main-f.sdr (lgs-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (l-v.sdr) / main-f.sdr (ls-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (le-v.sdr) / main-f.sdr (lgse-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
    Compiling main shader ->  main-v.sdr (le-v.sdr) / main-f.sdr (lse-f.sdr) ... 
    Shader failed to link:
Fragment shader(s) failed to link,  vertex shader(s) failed to link. 
unexpected error.
unexpected error.
    ERROR! Unable to create shader program!
  Shaders Manager initialized.
  Max texture units: 8 (16)
  Max elements vertices: 2147483647
  Max elements indices: 16777215
  Max texture size: 8192x8192
  Can use compressed textures: YES
  Texture compression available: YES
  Using trilinear texture filter.
  Using GLSL for model rendering.
  Shader Version: 3.30
... OpenGL init is complete!I've try to revert my driver but it seems that unless i uninstall it first i won't be able to...
Unfortunatly i can't test it right now as i got to leave home untill tomorow evening... i'll try to uninstall all radeon driver then install the previous one, i hope ati is not making a remake of the x1x00 series  
