Database connections

dear all, this error appear when i run the modeler  Opening JDBC connection to None failed with SQLState: S1000 Error code: -25 Message: error in script file line: 3263 org.hsqldb.HsqlException: data exception: invalid datetime format, giving up...(4/4)
1 answers

Try to Delete the file "Default" from the Application Directory "[Your Application Dairectory]\deployment\data\database\hsqldb\default" or the database folder and Rerun the application (Stop and Run the Mendix Studio Pro)