Sorry I have to cut and paste, but the details on the error were:
com.inductiveautomation.ignition.common.modules.ModuleLoadException: Error loading hook class “com.inductiveautomation.ignition.alarming.designer.DesignerHook” for module “Alarm Notification”.
at com.inductiveautomation.ignition.designer.IgnitionDesigner.loadModules(IgnitionDesigner.java:841)
at com.inductiveautomation.ignition.designer.IgnitionDesigner.startup(IgnitionDesigner.java:309)
at com.inductiveautomation.ignition.designer.DesignerStartupHook$2.run(DesignerStartupHook.java:275)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: com/inductiveautomation/vision/api/designer/palette/PaletteItem
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.inductiveautomation.ignition.designer.IgnitionDesigner.loadModules(IgnitionDesigner.java:836)
… 16 more
Caused by: java.lang.ClassNotFoundException: com.inductiveautomation.vision.api.designer.palette.PaletteItem
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
… 19 more
Ignition v7.6.2 (b2368)
Java: Oracle Corporation 1.7.0_25