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Help newbie starting

I bought a Mini2440 ARM9 board based on the Samsung S3C2440 chip.

I am trying to compile/run the demo:
C:\keil\ARM\Boards\Samsung\S3C2440\RTX_Blinky

But when I hit build, it says:
Build target 'S3C2440'
linking...
.\Obj\Blinky.axf: Error: L6218E: Undefined symbol os_stk_overflow (referred from rt_hal.o).
Target not created

What am I doing wrong?

Also is there any tutorial I can read how to do something simple like blink the LED on my board?

I am an experienced C/C++ user so that is not a problem but I do not know how to set up the project.

Thank you and I look forward to developing some ARM applications with Keil.