Tf2 validating error

by  |  22-Sep-2017 07:33

If this fails, or Windows is having trouble closing the game with this method, try restarting your computer.For other operating systems, try restarting your computer.

tf2 validating error-46

This system DOES NOT support the Open GL extension GL_APPLE_flush_buffer_range.

This system supports the Open GL extension GL_ARB_map_buffer_range.

Once your computer restarts, perform any troubleshooting operations that you intend before attempting to launch the game again.

After the last update, starting the game shows a black screen (menu music and button presses can still be heard) making the game totally unplayable.

With that knowledge alone I was able to make decent progress.

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