Access overrun?

When I try compiling my program using Borland Builder with CodeGuard fully enabled, I get this error message: Access Overrun: Attempt to access 1 byte(s) at 0x01EC0004+1048576, that is at offset 0+1048576 in heap block 0x01EC0004 which is only 1048576 bytes long. Now, what I''m trying to do is load vertex data from a heightmap array, and this error pops up at about the third or fourth access to that array. What''s the problem here? Why am I not getting an ''array index out of bounds'' error when I compile without CodeGuard? ----------------------------- Jappie BabJap Productions "There''s no such things as bugs; they''re just unintentional extra features"