I know this question is pretty general but I haven\'t found any hints on why this error may show up. What are possible causes of seeing initalizationError in Eclips
I had the same problem, the solution for me is the following.
I had only install the junit.jar file from the web, but this library related with the hacrest-core.jar
When I downloaded the hacrest-core.jar file and added it in my project everything works fine.