Lpc2000

I am new to this group and arm processor also.Has anyone ever faces 
the deadly data abort error.I have gone through a length document by 
David Seal but to no good use.Still have problem with data abort.

implemented simple stuff like SUBS PC,LR,#8
adjusts link register by 8 places(considering the pipelined 
architecture)and loading the Program counter with the same.

My data abort occurs at STR  R12,[R14,#RVCT_AicEoicr]

It seems that this has something to do with Base Update Abort Model.

which is the instruction I use to acknowledge the end of interrupt  
at the end of the interrupt subsroutine.

Please let me know if any one as faced this problem before.

Jens