Overview most common errors Installation and initial setup of RapidClipse RapidClipse does not start. Use-of-RapidClipse-with-increased-DPI-representation-or-scaling-of-the-Windows-surface. Internet or Firewall Settings. Use-of-special-characters Settings and Notes for the Workspace. Performance-problems-within-the-IDE. No-access-to-the-supplied-H2-test-database. UI Builder UI Builder opens with an exception. UI Builder opens with an HTTP error message. UI Builder opens but stays empty with no error message. Contents of the UI Builder are displayed shifted. https://rapidclipse.atlassian.net/wiki/spaces/RC11DOCDE/pages/2525069320/UI+Builder#5.-Activate-the-Designer-Console [Activate the Designer Console]. It always opens the class in the text editor instead of the UI builder. Inserted-CSS-will-not-be-displayed-in-UI-Builder. Project Development Java Runtime Configuration Sudden errors in the project with no apparent reason or changes in the code Error in project because internal classes were not created Error when starting the project with Tomcat