First of all, read the logcat output carefully. Most likely, there is some more precise information to be found.
Common problems are incompatible plugins or modules. This should be described precisely in the logcat output and must be solved by assembling the project's plugins correctly (valid inheritance hierarchies are required!). It can be solved by overriding and replacing the correct module.
The same can be done with whole plugins, so if you want to use an existing plugin with an incompatible module, you can override the whole plugin, using the desired module instead of the previously defined one(or just removing it from the module map).
Most complicated inheritance problems can be simplified and solved elegantly. Take your time analyzing your problem in order to not increase the complexity when it is not necessary.