signal exception 0 received: a data abort exception has occurred.....how to resolve?

You may really have the existing, just rare situation of running out of stack space. [B]EPOCSTACKSIZE[/B] is the keyword in the .mmp file (or the .mmp editor of Carbide.c++) where you can modify it.

THanks wizard. Right now the stacksize is 12288. How much max can i make it? One of my TBuf variable is of size over 54600 bytes.

Ah, I see the variable, yes. The maximum stack is 80 kilobytes ([url]http://library.developer.nokia.com/index.jsp?topic=/S60_5th_Edition_Cpp_Developers_Library/GUID-35228542-8C95-4849-A73F-2B4F082F0C44/sdk/doc_source/ToolsAndUtilities94/Build-ref/Mmp-ref/epocstacksize.html[/url]).
Generally you should not use large stack variables, prefer moving them to member variables or to the heap at least (HBufC or RBuf in this case).

Thanks wizard. Your suggestion worked! :)

And I will remember that about stack variables.