Although jQuery Easy can solve a certain number of jQuery issues (code conflicts, multiple jQuery libraries load, wrong order calls...), some problems can still occur.

These problems can come from different sources:

some components installed are not compatible with the version of jQuery set through the plugin (but work under another specific version of jQuery),
there are conflicts with MooTools still. Using the jQuery.noConflict(); statement is not enough by itself, some jQuery code may need to be modified. Check these examples at docs.jquery.com/Using_jQuery_with_Other_Libraries and at api.jquery.com/jQuery.noConflict/ for some explanations.

Check this article on how to solve jQuery conflict issues with the plugin.
A case study is also available to demonstrate how to use the plugin and why these steps need to be done in order to fix these issues.