SENSOR-CONTROLLER-STUDIO: SCS Task only runs once

I'm trying to integrate the SCS code into a CCS project and am following the i2c light sensor example (although I cant get that to run in CCS for some reason).

I do have my code triggering an initial task execution, but am unclear how to keep executing the task at regular intervals.

In my SCS execution code, I'm calling

fwGenAlertInterrupt();
fwScheduleTask(1);

which runs repeatedly in the task testing tab.

Over in CCS, I am starting it up with:

    scifOsalInit();
    scifOsalRegisterCtrlReadyCallback(scCtrlReadyCallback);
    scifOsalRegisterTaskAlertCallback(scTaskAlertCallback);
    scifInit(&scifDriverSetup);

    scifStartRtcTicksNow(0x00010000);
    scifStartTasksNbl(BV(SCIF_I2C_TEST_TASK_ID));

which triggers the callback and unblocks the semaphore, at which point I can tell that I got an execution of the task and subsequently call

    // Clear the ALERT interrupt source
    scifClearAlertIntSource();

    //DO STUFF HERE

    // Acknowledge the alert event
    scifAckAlertEvents();

At this point, I "think" it should run another task execution in a second, but nothing happens. Am I missing something, or misunderstanding the execution process?