Fixing eclipse IDE for binding development

I am unclear on the steps that lead to my dev environment being no longer functional - but hopefully someone here has hit this issue before and knows how to resolve it.

The plugins build fine with maven, yet eclipse is littered with errors. The errors are all import based, items like can’t find log.slf4j, org.osgi.framework, etc.

These dependencies are not specified in the pom files (that I can see…) so I am guessing its some sort of OSGI and eclipse integration issue, although I am not sure (and googling gets me nowhere) how to resolve it.

I have re-run the ‘Perform Setup Tasks’ and cleaned all projects, done a mvn install…

This was up and functional for at least 7 months.

Any ideas/pointers?