Hello Melanie,
[quote user="MELANIE JARNOUX"]Data verification failed at address 0xC3100000. Please verify target memory and memory map[/quote]
The primary causes of this error is documented here:
http://processors.wiki.ti.com/index.php/Troubleshooting_CCS_-_Data_Verification_Errors
Please read the article and try the suggestions. A quick look at your screenshot seems to suggest that SDRAM is not initialized (the third item listed in the article).
Thanks
ki