Hi, After building a new report in Jaspersoft Studio 5.2, which works perfectly, I'm finding it get a bunch of exceptions thrown once it's been uploaded to JasperServer. The report contains a series of CrossTab elements, and several of the TextField boxes contain methods such as DateFormat(), Date(), and Concatenate(), mainly used to display certain values in the required way for users. All of these throw MissingMethodException on JasperServer, usually stating that the method accepts parameters of certain types, then giving an example of the values it's received, which are of course of the type it claims to require. Here's an example: groovy.lang.MissingMethodException: No signature of method: Daily32Detailed32Marketing_CROSSTAB2_1373458176594_741565.DATE() is applicable for argument types: (java.lang.Integer, java.lang.Integer, java.lang.Integer) values: [2013, 5, 1] Possible solutions: wait(), any(), dump(), find(), grep() Is the problem some kind of incompatibility between groovy methods and java data types? Or something classpath related on JasperServer?