Issues with UIA and RTA on EVM6678

I've gotten quite stuck on this test program to get RTA Log_printfX output. It seems the upgrade from an 6472, and CCSv4.2 to the 6678 and CCSv5 is non-trivial.

At the moment I have been unable to get more than one print out of the program, and sometimes it won't even reach main.

Versions:

CCS: 5.1.0.06000

BIOS: 6.32.1.38

XDCTools: 3.22.1.21

IPC: 1.23.1.26

MCSDK: 2.0.1.12

UIA: 1.0.1.16.eng

config script:

//////////////////////////////////////////////
// Generic XDC Modules for use
//////////////////////////////////////////////
var Main        = xdc.useModule('xdc.runtime.Main');
// logger for diagnostics tools
var LoggerBuf   = xdc.useModule('xdc.runtime.LoggerBuf');
var LoggerSys   = xdc.useModule('xdc.runtime.LoggerSys');
//Generic Defaults - random things go here
var Defaults    = xdc.useModule('xdc.runtime.Defaults');
// Diagnostics tools
var Diags       = xdc.useModule('xdc.runtime.Diags');
var Log         = xdc.useModule('xdc.runtime.Log');
var SysStd      = xdc.useModule('xdc.runtime.SysStd');
var System      = xdc.useModule('xdc.runtime.System');

var Program     = xdc.useModule('xdc.cfg.Program');

var Memory      = xdc.useModule('xdc.runtime.Memory');

//////////////////////////////////////////////
// BIOS Modules for use
//////////////////////////////////////////////
var Bios    = xdc.useModule('ti.sysbios.BIOS');
var Task    = xdc.useModule('ti.sysbios.knl.Task');
var Clock   = xdc.useModule('ti.sysbios.knl.Clock');
var HeapMem = xdc.useModule('ti.sysbios.heaps.HeapMem');
// bios utility for CPU loading
var Load    = xdc.useModule('ti.sysbios.utils.Load');
// Real Time Analysis Agent for getting data out of the DSP
var Agent   = xdc.useModule('ti.sysbios.rta.Agent');

//////////////////////////////////////////////
// TI Debugging modules -- not needed for C66?
//////////////////////////////////////////////
//var ti_rtdx_driver_RtdxDvr = xdc.useModule('ti.rtdx.driver.RtdxDvr');
//var ti_rtdx_RtdxModule     = xdc.useModule('ti.rtdx.RtdxModule');

//////////////////////////////////////////////
// TI Debugging modules
//////////////////////////////////////////////
var UIAErr      = xdc.useModule('ti.uia.events.UIAErr');
var UIAEvt      = xdc.useModule('ti.uia.events.UIAEvt');
var UIABenchmark= xdc.useModule('ti.uia.events.UIABenchmark');
var UIAStatistic= xdc.useModule('ti.uia.events.UIAStatistic');

var UIALogger   = xdc.useModule('ti.uia.runtime.LoggerCircBuf');




// parameters for creating new tasks
var task_params = new Task.Params;

//////////////////////////////////////////////
// Diagnostics and Logging Configuration
//////////////////////////////////////////////
// Old logger
//var logbuf_params = new LoggerBuf.Params;
//logbuf_params.bufType = LoggerBuf.BufType_CIRCULAR;
//logbuf_params.numEntries = 512;
//logbuf_params.exitFlush = true;
//var loggerBuf = LoggerBuf.create(logbuf_params);
// New UIA Logger
var loggerParams = new UIALogger.Params();
loggerParams.transferBufSize = 32768;
loggerBuf = UIALogger.create(loggerParams);
loggerBuf.instance.name = "Main Logger";

Load.taskEnabled = true;

Main.common$.logger = loggerBuf;
Main.common$.diags_USER1 = Diags.RUNTIME_ON;
Main.common$.diags_USER2 = Diags.RUNTIME_ON;
Main.common$.diags_USER3 = Diags.RUNTIME_OFF;
Main.common$.diags_USER4 = Diags.RUNTIME_OFF;
Main.common$.diags_USER5 = Diags.RUNTIME_OFF;
Main.common$.diags_USER6 = Diags.RUNTIME_OFF;
Main.common$.diags_INFO = Diags.RUNTIME_ON;
Main.common$.diags_ANALYSIS = Diags.RUNTIME_ON;
Main.common$.diags_LIFECYCLE = Diags.RUNTIME_ON;
Main.common$.diags_INTERNAL = Diags.RUNTIME_ON;
Main.common$.diags_EXIT = Diags.RUNTIME_ON;
Main.common$.diags_ENTRY = Diags.RUNTIME_ON;

Agent.configureLoadLog = true;
Agent.numLoadRecords = 512;
Agent.configureSystemLog = true;
Agent.numSystemRecords = 512;
//Agent.transport = Agent.Transport_RTDX;
Agent.priority = 15;
Agent.periodInMs = 10;

//////////////////////////////////////////////
// load program specific modules
//////////////////////////////////////////////
var Benchmark = xdc.useModule('tasks.BenchmarkTask');
var Covar     = xdc.useModule('algorithms.Covariance');

// create and configure program specific XDC Instances
var covar_params = new Covar.Params;
var bench_params = new Benchmark.Params;
bench_params.CovarianceH = Covar.create(covar_params);
var bench_task = Benchmark.create(bench_params);

// create the Benchmarking task
task_params.arg0 = bench_task;
task_params.arg1 = 0;
task_params.priority = 10;
Task.create(Benchmark.RunBenchmark, task_params);


//////////////////////////////////////////////
// Global Settings
//////////////////////////////////////////////
System.SupportProxy = SysStd;
System.extendedFormats = "%f";


//////////////////////////////////////////////
// Memory Settings
//////////////////////////////////////////////
Memory.defaultHeapSize = 0x10000;
Program.heap = 0x10000

Program.stack = 0x2000;

var heap_mem_params = new HeapMem.Params;
heap_mem_params.size = 0x10000;
heap_mem_params.align = 128;
Program.global.heap = HeapMem.create(heap_mem_params);

Memory.defaultHeapInstance = Program.global.heap;

Any help in getting RTA Log_printf to work would be helpful.

Thanks