Digital filtering problem

I am doing a continously data acquisition (buffered) and digital filtering.
I need a bandpass from 300-3000hz.
I am sampling around 15000 hz.
My data acquisiton is working fine.. but I have no clue why this filter is not working!
I have seen allthe examples and I dont think I have dont anythign different ...
Can anyone point out what is my error?.
I did some debuging and i think something is wrong with the case structure in processing.vi..No data maniputaltion wihtin th case structure is working ...
Have attached the files
thanks
Clueless :-(
Attachments:
datacquisition.vi ‏95 KB
processing.vi ‏92 KB

hi david
thanks for your reply.
I used the single stepping technique and I now see that the status of the error is FALSE but the code number is 10803. Just as u had said!
This warning is generated in the first vi that is AI Configure.vi.
I tried looking up this warning but it was very vague.
it says
NI_DAQ LV: The ongoing transfer has been stopped.This is to prevent regeneration for output operations, or to reallocate resources for input operations
The source is AI Group configure.
I tried what you suggested and removed the code condition and it works!
But I would like to know if it is okay If I remove the
code from the OR condition.I saw the example of MY DATA PROCESSINg.vi and in that they have wired the code to the condiiton.
Can there be
any warnings for which it would not be advisable to continue executing?
Also I would be very very grateful if you could tell me why am I getting this warning to avoid future problems..
thanks again..

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