[TxMt] CLI mate utility crash Leopard 10.5.3

[Boris Gordon]

Am trying the latest 1.5.7 version and am getting the following crash  
when attempting to use the 'mate' CLI utility.

2008-05-30 18:35:27.487 mate[1659:10b] An uncaught exception was raised
2008-05-30 18:35:27.488 mate[1659:10b] [NOTE: this exception  
originated in the server.]
*** Object does not implement or has different method signature
2008-05-30 18:35:27.490 mate[1659:10b] *** Terminating app due to  
uncaught exception 'NSInvalidArgumentException', reason: '[NOTE: this  
exception originated in the server.]
*** Object does not implement or has different method signature'
2008-05-30 18:35:27.492 mate[1659:10b] Stack: (
     2477355339,
     2526257403,
     2477354097,
     2454304598,
     2454302457,
     2477377962,
     2477378066,
     10507,
     14446,
     9754,
     9525
)
Trace/BPT trap

Have been able to use mate in the past with 1.5.6 on Leopard 10.5.2  
but just noticed this crash since upgrading to 10.5.3.

Anyone else noticed anything ?

--
Boris