mtassinari Posted October 5, 2012 Share Posted October 5, 2012 I'm having an issue trying to upgrade from version 4.5.1 to 4.7.0: whenever I replace the old library with the new one, and I try to recompile our tomcat servlets which use the jasperreports functionality, I get an error saying that "class version is 50 but should be 49"I'm compiling using JDK 5, is jasperreports 4.7.0 still compatible with that JDK? Or what could be the problem?Restoring the old 4.5.1 version solves the problem, but I'd like to try to upgrade. Link to comment Share on other sites More sharing options...
mtassinari Posted October 10, 2012 Author Share Posted October 10, 2012 No one can help me with this issue? Am I doing something wrong during compilation, perhaps? Link to comment Share on other sites More sharing options...
Solution mgeise Posted October 11, 2012 Solution Share Posted October 11, 2012 From JasperReports Library 4.6, there is a minimum requirement of Java 1.6. Java 1.5 hit it's end of life date back in October 2009. Link to comment Share on other sites More sharing options...
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