I am very insterested in this project,recently I build Mango in Eclipse according to the "Building Mango in Eclipse";As a newcomer,I meet lots of problems.Finally I found the reason:When I import the project,I just import the src.When I copy

setPointSnippetMap.properties
changeSnippetMap.properties
chartSnippetMap.properties
env.properties
i18n.properties
log4j.xml
messages_de.properties
messages_en.properties
messages_zh.properties
messages_fi.properties
messages_nl.properties
messages_pt.properties

to src,copy db directory to war\WEB-INF,
many problems are solved.......... :)

I am just newcomer and I do hope this would be helpful for somebody......