I'm starting my intership next Monday. My mission is migrating an application from Smart gwt 3.0 to 3.1.

The application works with XML's Datasources and Xpath to query all data. It works within a Maven Project and uses Spring/Hibernate/Bitronix-JTA. According to my boss, when we upgrade smartgwt to 3.1 there is no error or exception thrown, however, most datasources don't work anymore. He said that the XPath is not valid anymore and it's being interpreted as String or something like that.

Monday I'll see what the issue looks like, but before that I'd rather preferred to ask question here to have your opinions. If someone has already seen this issue he can make my ideas clear and help to make a good beginning. If I've got the source code like POM or \*.ds.xml or output exception I'll post it here as I get them.