Closed the error window, but 'Servoy Next Generation Platform' banner persists, because Smart client is hung. Smart client must be closed manually. The log has this:
2016-12-14 16:29:15,744 ERROR [http-8080-3] com.servoy.j2db.util.Debug - Throwable [ ]
com.servoy.j2db.persistence.RepositoryException: com.servoy.j2db.persistence.RepositoryException: root object not found
at com.servoy.j2db.server.Za.Za.Za(Za.java:591)
at com.servoy.j2db.server.Za.Za.loadRootObject(Za.java:147)
at com.servoy.j2db.persistence.RootObjectCache.getRootObject(RootObjectCache.java:236)
at com.servoy.j2db.persistence.RootObjectCache.getActiveRootObject(RootObjectCache.java:170)
at com.servoy.j2db.persistence.RootObjectCache.getActiveRootObject(RootObjectCache.java:178)
at com.servoy.j2db.persistence.AbstractRepository.getActiveRootObject(AbstractRepository.java:427)
at com.servoy.j2db.server.servlets.Zs.doGet(Zs.java:367)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:631)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:620)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
Caused by: com.servoy.j2db.persistence.RepositoryException: root object not found
at com.servoy.j2db.server.Za.Za.Za(Za.java:1249)
at com.servoy.j2db.server.Za.Za.Za(Za.java:1543)
... 21 more
Repeated the entire process several times, but the outcome is always the same. Customer also has two web-based solutions that will not launch. The web page comes up with 'Loading...' in the upper left corner, but the page is all white.
How do I fix this?