Error when starting up R4

I get the following error when starting up r4. I have r2extrem and that works fine.
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R4 LOG FILE
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
>H:\R4\WaveIn.cpp:122>Started []
>H:\R4\R4GlExt.cpp:40>Loading OpenGL Extensions... []
>H:\R4\R4GlExt.cpp:60>WGL Extension Strings [WGL_ARB_buffer_region WGL_ARB_extensions_string]
>H:\R4\R4GlExt.cpp:60>WGL Extension Strings [WGL_ARB_pbuffer WGL_ARB_pixel_format WGL_EXT_extensions_string]
>H:\R4\R4GlExt.cpp:66>WGL Extension Strings [WGL_EXT_swap_control ]
!H:\R4\R4GlExt.cpp:117>WGL_ARB_render_texture extension was not found []
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R4 LOG FILE
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
>H:\R4\WaveIn.cpp:122>Started []
>H:\R4\R4GlExt.cpp:40>Loading OpenGL Extensions... []
>H:\R4\R4GlExt.cpp:60>WGL Extension Strings [WGL_ARB_buffer_region WGL_ARB_extensions_string]
>H:\R4\R4GlExt.cpp:60>WGL Extension Strings [WGL_ARB_pbuffer WGL_ARB_pixel_format WGL_EXT_extensions_string]
>H:\R4\R4GlExt.cpp:66>WGL Extension Strings [WGL_EXT_swap_control ]
!H:\R4\R4GlExt.cpp:117>WGL_ARB_render_texture extension was not found []