error #10234-D: unresolved symbols remain

I have a simple little program that did compile until I re-installed everything due to a computer crash. Now, with the same settings (?) I get linker errors. First, here is my little program:

#include <stdint.h>
#include <stdbool.h>
#include "driverlib/sysctl.h"
#include "IQmath/IQmathLib.h"

#define PI 3.14156

uint8_t sine_array[128], i;

void main(void)
{
    SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN); //40 MHz

     for (i = 0; i<128; i++)
     {
             sine_array[i] = _IQ29sin(_IQ29(2 * PI * i/128 - PI))>>22 & 0xFF;
     }

     while(1)
     {
     }
}

Here is the linker error listing:

**** Build of configuration Debug for project sine_wave_generation ****

"c:\\ti\\ccsv6\\utils\\bin\\gmake" -k all
'Building target: sine_wave_generation.out'
'Invoking: ARM Linker'
"c:/ti/ccsv6/tools/compiler/arm_5.1.8/bin/armcl" -mv7M4 --code_state=16 --float_support=FPv4SPD16 --abi=eabi -me -g --gcc --define=ccs="ccs" --define=PART_TM4C123GH6PM --display_error_number --diag_warning=225 --diag_wrap=off -z -m"sine_wave_generation.map" --heap_size=0 --stack_size=512 -i"c:/ti/ccsv6/tools/compiler/arm_5.1.8/lib" -i"c:/ti/ccsv6/tools/compiler/arm_5.1.8/include" --reread_libs --warn_sections --display_error_number --diag_wrap=off --xml_link_info="sine_wave_generation_linkInfo.xml" --rom_model -o "sine_wave_generation.out" "./tm4c123gh6pm_startup_ccs.obj" "../tm4c123gh6pm.cmd" -l"C:\ti\TivaWare_C_Series-2.1.0.12573\driverlib\ccs\Debug\driverlib.lib" -l"libc.a"
<Linking>

undefined first referenced
symbol in file

--------- ----------------
>> Compilation failure
main c:\ti\ccsv6\tools\compiler\arm_5.1.8\lib\rtsv7M4_T_le_v4SPD16_eabi.lib<args_main.obj>

error #10234-D: unresolved symbols remain
error #10010: errors encountered during linking; "sine_wave_generation.out" not built
gmake: *** [sine_wave_generation.out] Error 1
gmake: Target `all' not remade because of errors.

So to fix this I go to "show build settings/ARM linker/file search path/Include library file or command file as input... where is put the following"

"libc.a"

"C:\ti\TivaWare_C_Series-2.1.0.12573\driverlib\ccs\Debug\driverlib.lib"

then, in the box below (Add <dir> to library search path (--search_path, -i) is put the following:

"${CG_TOOL_ROOT}/lib"

"${CG_TOOL_ROOT}/include"

I am running CCS 6.01 on 64-bit Win7, compiling for the EK-TM4C123GXL launchpad. This all worked before, I guess I just need another suggestion.