I hope I get the correct forum... When I open the developer I get "Solution cannot be read. Please check for problems in the underlying file representation". In the log file I found an unexpected exception : "com.servoy.j2db.persistence.RepositoryException: com.servoy.j2db.persistence.RepositoryException: Cannot handle file versions greater than 40". I didn't install anything since the last time, when everything worked fine. Anybody knows how to solve this problem?
Thanks in advance.