I have seen ResMan lock up at this point before. A few things to check are whether disconnecting the MXI-2 cable when the software is locked up will actually end the lock-up. If this ends the lock, I would recommend trying another cable or ensuring that your cable is connected in the correct direction. Antoher thing to check is that the Logical Address of the MXI-2 in the VXI chassis is equal to a power of 2. (i.e. - 1,2,4,8,16,32,64,128), this could also cause ResMan to behave incorrectly.
Anthony Bacak
National Instruments
Applications Engineering