Thanks,
The same plugins are working fine when install from P2 update manager,
But we are planning to automate this insatllation process and we are trying to install these plugins in silent mode.,
As per your suggestion we have copied the same to C:\Genuitec\MyEclipse7.5\dropins\plugins and also the features to the features folder
with this we are observing some of the plugins are picked up by the platform and some are not.
So we need help in this regard.