[xwiki-users] Version Update Problems (7.3 Milestone 1)

I am trying to update from 7.2 to 7.3 Milestone 1. Almost every single time I do an update, I run into problems and either parts of the wiki don't work or it won't load at all. Right now, won't load at all. Blank screen. No error, no nothing. Logs are not helping. 24-Oct-2015 08:07:08.398 INFO [Core extension repository updater] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load [org.xwiki.extension.repository.xwiki.internal.XWikiExtension]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access. java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [org.xwiki.extension.repository.xwiki.internal.XWikiExtension]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access. at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1327) at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1313) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1196) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1157) at org.xwiki.extension.repository.xwiki.internal.XWikiExtensionRepository.resolve(XWikiExtensionRepository.java:330) at org.xwiki.extension.repository.internal.DefaultExtensionRepositoryManager.resolve(DefaultExtensionRepositoryManager.java:213) at org.xwiki.extension.repository.internal.core.DefaultCoreExtensionScanner.updateExtensions(DefaultCoreExtensionScanner.java:187) at org.xwiki.extension.repository.internal.core.DefaultCoreExtensionRepository$1.run(DefaultCoreExtensionRepository.java:134) at java.lang.Thread.run(Unknown Source) 2015-10-24 08:11:03,743 [localhost-startStop-1] ERROR .o.i.DefaultObservationManager - Failed to lookup listeners org.xwiki.component.manager.ComponentLookupException: Failed to lookup component [role = [interface org.xwiki.observation.EventListener] hint = [solr.availablelocales]] at org.xwiki.component.embed.EmbeddableComponentManager.getInstanceMap(EmbeddableComponentManager.java:216) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstanceList(EmbeddableComponentManager.java:198) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.observation.internal.DefaultObservationManager.initializeListeners(DefaultObservationManager.java:164) [xwiki-commons-observation-local-7.3-milestone-1.jar:na] at org.xwiki.observation.internal.DefaultObservationManager.getListenersByEvent(DefaultObservationManager.java:131) [xwiki-commons-observation-local-7.3-milestone-1.jar:na] at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:267) [xwiki-commons-observation-local-7.3-milestone-1.jar:na] at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:321) [xwiki-commons-observation-local-7.3-milestone-1.jar:na] at org.xwiki.container.servlet.XWikiServletContextListener.contextInitialized(XWikiServletContextListener.java:118) [xwiki-platform-container-servlet-7.3-milestone-1.jar:na] at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4729) [catalina.jar:8.0.23] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5167) [catalina.jar:8.0.23] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.0.23] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) [catalina.jar:8.0.23] at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) [catalina.jar:8.0.23] at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) [catalina.jar:8.0.23] at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1101) [catalina.jar:8.0.23] at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1786) [catalina.jar:8.0.23] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [na:1.8.0_60] at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_60] at java.lang.Thread.run(Unknown Source) [na:1.8.0_60] Caused by: org.xwiki.component.manager.ComponentLookupException: Failed to lookup component [org.xwiki.search.solr.internal.SolrInstanceProvider] identified by [role = [javax.inject.Provider<org.xwiki.search.solr.internal.api.SolrInstance>] hint = [default]] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:394) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:190) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getDependencyInstance(EmbeddableComponentManager.java:356) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:312) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:424) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstanceMap(EmbeddableComponentManager.java:214) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] ... 19 common frames omitted Caused by: org.xwiki.component.phase.InitializationException: Failed to lookup configured Solr instance type [embedded] at org.xwiki.search.solr.internal.SolrInstanceProvider.initialize(SolrInstanceProvider.java:74) ~[xwiki-platform-search-solr-api-7.3-milestone-1.jar:na] at org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:322) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:424) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:392) ~[xwiki-commons-legacy-component-default-7.3-milestone-1.jar:na] ... 24 common frames omitted