Build errors when IPC is used with the OMAPL-137

Getting the following build errors when I try to use IPC:

 ti_sdo_ipc_gates_GateMPSupportNull_query__E C:\Users\stephen.sanders\workspace_v6_1\HelloWorld_arm\Debug\configPkg\package\cfg\ARMapp_pe9.oe9
 ti_sdo_ipc_gates_GatePeterson_query__E      C:\Users\stephen.sanders\workspace_v6_1\HelloWorld_arm\Debug\configPkg\package\cfg\ARMapp_pe9.oe9

>> Compilation failure
 ti_sdo_ipc_heaps_HeapMemMP_isBlocking__E    C:\Users\stephen.sanders\workspace_v6_1\HelloWorld_arm\Debug\configPkg\package\cfg\ARMapp_pe9.oe9

error #10234-D: unresolved symbols remain

IPC 3.10.2.13, SYSBIOS 6.45.1.29, XDC 3.32.0.06, compiler 5.2.27, OMAPL-137/ARM...

Any clue? The errors start when I actually include a call to Ipc_start(). w/o the call the build is clean.