Cannot access memory

[Paul Hewlett]

I have changed  to SuSE 8.2 from RedHat 9. However after compiling my 
code I am unable to set breakpoints.
The msg
-------------------------------------------------------------------
GNU DDD 3.3.1 (i386-suse-linux), by Dorothea Lütkehaus and Andreas Zeller.
Copyright © 1995-1999 Technische Universität Braunschweig, Germany.
Copyright © 1999-2001 Universität Passau, Germany.
(gdb) break testbasic.c:1346
Breakpoint 1 at 0x804c006: file testbasic.c, line 1346.
(gdb) run
Warning:
Cannot insert breakpoint 1.
Error accessing memory address 0x804c006: Input/output error.
Cannot insert breakpoint -2.
Error accessing memory address 0x4000bb50: Input/output error.
The same program may be running in another process.
(gdb)
--------------------------------------------------------------------
is displayed. What does this mean ?

Any help appreciated


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