LiveCycle ES starts with version 8 and above..
I think you are attempting to install an ES based DSC into pre-ES version.
In 7.* versions of LiveCycle, there were QPAC (Quick Process Action Component) as opposed to DSCs currently in ES+.
You might have to rewrite your component according to QPAC specification to make it work in 7.X version.
You r correct. It will start with version 8. Sorry for that. I have used ES2 but not ES. So there wont be QPACs here. Now what might be the reason and solution?
Actually I have been provided with a JAR which has the component code. I just changed name the component ID in the component.xml and corresponding Java file name. Thats it.. Nothing else. I did this in order to get a new component, instead of replacing the existing one in the server.