Loss numbers are flashing on my MultiFiber Pro

If the loss numbers are flashing on your MultiFiber Pro:
            MultiFiber Pro Loss Numbers Flashing
Then you have a negative loss reading that is worse than -0.09 dB.

The most common cause is that your reference was done incorrectly and or the sources had not been allowed to stabilize. Dirty test cords can also cause unpredictable results too. 
Following the instructions again in the following articles for a successful measurement: