uVision 4 External RAM Configuration Problem STM32f10x

I am using a STM3210E-EVAL baord with uVision4 as my development tools.

There are project configuration Options for the Target where "Read/Write Memory Areas" can be defined. For the STM3210E-EVAL there is external RAM starting at 0x68000000. There is 512KbitX16, which is about a 1 megabyte (0x100000).

After enabling this external memory area the processor will not jump to main. Why would this not work? The "NoInit" check box is not set.

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