There is not any documentation regarding functional tests for the TPP1000 or TPP500 passive probes. Could it be that the probe is connected to a earth-isolated voltage source? Without a ground reference to the source you won't get a signal because the scope itself is earth grounded.
Depending on the bandwidth of your MSO54 you should have received 4 of either TPP probes. Do you believe one of the TPP probes to be damaged or defective?
