Hi
Thankyou very much for your kind response, but i followed all steps as mentioned in help, my question is this that when i install first two contribution it was sucessfully done, but when i tried to embed third one contribution, so i did not find the relavent code, bcoz it had been changed when i uploaded the catalog folder as given in Basic templated contribution.
I wana know, that why this happen, even i am following the same procedure as given in each contribution.