I did just duplicated my 7.9.10 server for a upgrade to 8.0 test. Seemed to fail in the same matter. Only grey screen when launcing vision clients.
Console:
Exception in thread “AWT-EventQueue-0” java.lang.NullPointerException: WindowInfo for window com.inductiveautomation.vision/windows/PerfectChat was null.
at com.inductiveautomation.factorypmi.application.model.WindowCache.getWindowInfo(WindowCache.java:182)
at com.inductiveautomation.factorypmi.application.model.WindowCache.getWindowInfo(WindowCache.java:145)
at com.inductiveautomation.factorypmi.application.model.WindowCache.lambda$getStartupWindows$4(WindowCache.java:487)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)
at com.inductiveautomation.factorypmi.application.model.WindowCache.getStartupWindows(WindowCache.java:491)
at com.inductiveautomation.factorypmi.application.FPMIApp.startup(FPMIApp.java:496)
at com.inductiveautomation.factorypmi.application.runtime.ClientPanel.lambda$null$4(ClientPanel.java:663)
at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)