Dear Elavarasan Selvaraj, I am Raveendrababu Chintalapudi doing M.tech project in CSIR-CSIO,Chennai. I am using LPC3250 development kit using Keil uvision4 software i am getting errors like 1. DARMP3.DLL file not found 2. .axf file is could not load 3. no write access permission. I have seen your post in arm discussion forum you got solution for DARMP3.DLL file error. could please give me a solution for that error and if you know give solution for remaining errors. Now i am stopped here these errors are not debugging i am not getting solution for these errors please give solution as early as possible.