[pde-dev] Unable to install plugin from local site

[ravi ghanate <ravighanate@xxxxxxxxx>]

Hi,
The plugin I wrote, works fine in runtime workbench. When I try to
install it after building feature and site (as specified in eclipse -
help - deploying features tutorial). It gets installed, but when I
invoke a action with respect to that plugin, I get the following error
message:
"The chosen operation is not curently available" 
and in other case it gives a "Class NotFound Exception". 
But my plugin in the eclipse/plugin directory already has all the
classes required. I really cannot figure out where or what the problem
is.
I hope you got the problem. Let me know if need any more explanation.
(PS: Is it required to have a META-INF and the binaries in a jar.. in the plugin directory?)

Thanks & Regards,
Ravi Ghanate