Have created one plugin extended by ApplicationSmartService. when deploy this pl

Have created one plugin extended by ApplicationSmartService. when deploy this plugin jar file to appian then it gives below error.

2013-09-25 11:38:45,430 [Plugin Hot Deploy] ERROR com.appiancorp.plugins.LoggingPluginEventListener - Failed to load Plug-in 'com.[company].plugins.[module].[co].[part]-1.0.1.jar' (com.[company].plugins.[module].[co].[part]-1.0.1.jar) version 0.0: 'No plugin factories found for plugin file Unit: \\\\...\\plugins\\com.[company].plugins.[module].[co].[part]-1.0.1.jar (1380109009567). Does it contain an appian-plugin.xml file?'

I have extracted jar file and its structure is as follow -

src/...
com/class files
meta-inf
appian-plugin.xml/

Please suggest what is wrong with this. (xml file is already there as above structure)

Thank You...

OriginalPostID-82644

OriginalPostID-82644