I am facing a similiar probelm discussed in this thread last year without answer
http://e2e.ti.com/support/arm/sitara_arm/f/791/p/279322/1178466.aspx#1178466
I am usimng
1.EVMAM335x kit with
2.XDX100V2 USB debugger
3. CCS 5
4. Starterware
I try with example from starterware with wnet and Graphics Library both shows me simliar issue