TM4C1294NCPDT: Trouble integrating TivaWare demo 'timers' into TI-RTOS

I am having a hard time integrating the 'timers' demo into a new TI-RTOS application. Here is my target -

Goal:

• Periodic timer firing and handle in a TI-RTOS demo application

Attempted Method:

1. New CCS Project -> TI-RTOS Example -> 'Empty  Project'
2. Copy timers.c content (#include, int handlers, main loop initializations)
3. Add startup_ccs.c from timers project
4. Replace EK_TM4C1294XL.cmd with timers_ccs.cmd from project
5. Enable compiler optimizations ('-O 2')

I get the following result at the Console, and the build fails -

<Linking>
"configPkg/linker.cmd", line 147: warning #10096-D: specified address lies outside memory map
error #10264: DEFAULT memory range overlaps existing memory range FLASH
error #10264: DEFAULT memory range overlaps existing memory range SRAM
error #10010: errors encountered during linking; "Test.out" not built

Here is the related section from linker.cmd -

/*
 * symbolic aliases for static instance objects
 */
xdc_runtime_Startup__EXECFXN__C = 1;
xdc_runtime_Startup__RESETFXN__C = 1;


SECTIONS
{
    .bootVecs:  type = DSECT
    .vecs: load > 0x20000000
    .resetVecs: load > 0x0                  <- "line 147"



    xdc.meta: type = COPY
}

Why does this not fit? How can I integrate a timer interrupt into TI-RTOS?