Error code 16 is LJ_ERROR LJE_AD_PIN_CONFIGURATION_ERROR. Without seeing code, I suspect you are trying to read from a timer that hasn't been enabled which will cause error 16. Make sure that before reading from timers that you have them enabled (LJ_chNUMBER_TIMERS_ENABLED), configured (LJ_ioPUT_TIMER_MODE), and are reading from the correct timer number (0 to LJ_chNUMBER_TIMERS_ENABLED-1 where the max number of timers you can enable is 6). Take a look at your programming language's timer/counter example and the pseudocode here for help on using timers:
If that doesn't help to resolve the issue, please provide your timer code so we can see what you are doing.