I'm following application note document p/n, 1021646 on creating "hello world' app in CCS v5.1.0. I got to step 10 on section 3, and got an error (see below) while trying to connect. Can you help? 

Cortex_A8_0: GEL Output: mDDR Hynix H8KDS0UN0MER - 2048 Mbit(256MB) on CS0, 16M x 32bit x 4Banks 
Cortex_A8_0: Trouble Writing Memory Block at 0x6d000010 on Page 0 of Length 0x4: (Error -2130 @ 0x6D000010) Unable to access device memory. Verify that the memory address is in valid memory. If error persists, confirm configuration, power-cycle board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 5.0.520.0) 
Cortex_A8_0: GEL: Error while executing OnTargetConnect(): target access failed.