please solve *access violation problem

I'm working on ARM7 cored LPC2138 MCU. while declaring arrays of lengh 250 it gives a problem as follows
*** error 65: access violation at 0x3FFFFEF0 : no 'write' permission

what this problem is about?? somebody please solve...

 RE: please solve *access violation problem

Your program tries to use memory that, according to your configuration of the debugger, doesn't exist. The debugger, rather justifiably, complains about that. At least one of the two (program, debug configuration) has to be wrong. You and the controller datasheet will have to figure which of them it is.