error: '*.obj' not found during automatic library build

I am getting this error in CCS 5.3.0 when building a project that I know builds fine with the exact same project settings under CCS 5.1

I'm not really sure how to diagnose this issue, but I have turned on verbose errors for the linker. The compiler seems to complete without issue, and I have omitted its output here. What follows is the output when the linker takes over. Any help would be appreciated. Thanks!

'Invoking: MSP430 Linker'

"C:/ti/ccsv5/tools/compiler/msp430_4.1.2/bin/cl430" -vmspx --abi=coffabi -g --gcc --define=__MSP430F2618__ --define=__ROUTER_ROLE__ --diag_warning=225 --display_error_number --large_memory_model --printf_support=full --c_src_interlist --check_misra="1" -z --stack_size=300 -m"SensorSuite.map" --heap_size=300 --use_hw_mpy=16 -i"C:/ti/ccsv5/ccs_base/msp430/include" -i"C:/ti/ccsv5/tools/compiler/msp430_4.1.2/lib" -i"C:/ti/ccsv5/tools/compiler/msp430_4.1.2/include" --reread_libs --verbose_diagnostics --warn_sections --display_error_number --issue_remarks --rom_model -o "SensorSuite.out"  "./Application/main.obj" "./Application/AppMain.obj" "./Kernel/portable/CCS/MSP430F2618/port.obj" "./Kernel/portable/MemMang/heap_2.obj" "./Kernel/tasks.obj" "./Kernel/queue.obj" "./Kernel/list.obj" "./Services/analog/sht11.obj" "./Services/analog/SensorSuite.obj" "./Services/analog/AFEinterface.obj" "./Services/comm/handlers/xSerialNetTokenizerInvoker.obj" "./Services/comm/serial/multiCOM.obj" "./Services/comm/serial/protocols/SPICOM.obj" "./Services/comm/serial/protocols/485COM.obj" "./Services/comm/serial/protocols/232COM.obj" "./Services/peripherals/flash/s25fl128p.obj" "./Services/peripherals/rtc/pca21125_test.obj" "./Services/peripherals/rtc/pca21125.obj" "./Services/rtc_scheduler/rtc_sched.obj" "./Services/rtc_scheduler/BCDmath.obj" -l"libc.a" "../lnk_msp430f2618.cmd" 

<Linking>

warning #10366-D: automatic library build: using library

   "C:\ti\ccsv5\tools\compiler\msp430_4.1.2\lib\rts430xl.lib" for the first

   time, so it must be built.  This may take a few minutes.

  -->  error: '*.obj

' not found

gmake.exe[1]: *** [library] Error 1

>> ERROR: mklib: gmake error during rts430xl.lib build

warning #10207-D: automatic RTS selection:  resolving index library "libc.a" to

   "C:\ti\ccsv5\tools\compiler\msp430_4.1.2\lib\rts430xl.lib", but

remark #10209-D: automatic RTS selection:  linking in index library "libc.a"

   "C:\ti\ccsv5\tools\compiler\msp430_4.1.2\lib\rts430xl.lib" was not found

warning #10062-D: entry-point symbol "_c_int00" undefined

 undefined first referenced         

  symbol       in file              

 --------- ----------------         

 memcmp    ./Kernel/tasks.obj       

 memcpy    ./Application/AppMain.obj

>> Compilation failure

error #10234-D: unresolved symbols remain

warning #10202-D: no suitable entry-point found; setting to 0

error #10010: errors encountered during linking; "SensorSuite.out" not built

gmake: *** [SensorSuite.out] Error 1

gmake: Target `all' not remade because of errors.

**** Build Finished ****