Exception when opening a build type, also every time you edit the build type: JetBrains.Util.InternalErrorException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at JetBrains.ReSharper.BuildScriptSupport.Psi2.Impl.MSBuild.MSBuildUsingTaskTag.get_AssemblyFile() in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\Psi2\Impl\MSBuild\MSBuildUsingTaskTag.cs:line 62 at JetBrains.ReSharper.BuildScriptSupport.Psi.Impl.MSBuild.Tasks.MSBuildTaskManager.LoadAssembliesFromUsingTask(MSBuildUsingTaskTag tag) in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\Psi\Impl\MSBuild\Tasks\MSBuildTaskManager.cs:line 111 at JetBrains.ReSharper.BuildScriptSupport.Psi2.Impl.MSBuild.MSBuildFile.FindReferrableElements(ITreeNode node) in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\Psi2\Impl\MSBuild\MSBuildFile.cs:line 73 at JetBrains.ReSharper.BuildScriptSupport.Psi2.Impl.MSBuild.MSBuildFile.FindReferrableElements(ITreeNode node) in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\Psi2\Impl\MSBuild\MSBuildFile.cs:line 80 at JetBrains.ReSharper.BuildScriptSupport.Psi2.Impl.MSBuild.MSBuildFile.AddDeclarationsFromImportTag(List`1 candidates, MSBuildImportTag tag) in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\Psi2\Impl\MSBuild\MSBuildFile.cs:line 193 at JetBrains.ReSharper.BuildScriptSupport.Psi2.Impl.MSBuild.MSBuildFile.FindReferrableElements(ITreeNode node) in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\Psi2\Impl\MSBuild\MSBuildFile.cs:line 77 at JetBrains.ReSharper.BuildScriptSupport.Psi2.Impl.MSBuild.MSBuildFile.FindReferrableElements(ITreeNode node) in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\Psi2\Impl\MSBuild\MSBuildFile.cs:line 80 at JetBrains.ReSharper.BuildScriptSupport.Psi2.Impl.BuildScriptFileBase.AddGlobalDeclarations(IWritableSymbolTable table, Int32 level) in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\Psi2\Impl\BuildScriptFileBase.cs:line 105 at JetBrains.ReSharper.Psi.Resolve.Resolver.ProcessBeforeInterior(IElement element) in c:\A\work\Server\be08dc054b0f1225\src\Psi\src\Resolve\Resolver.cs:line 104 at JetBrains.ReSharper.Psi.Resolve.Resolver.ProcessResolveElement(IElement topElement) in c:\A\work\Server\be08dc054b0f1225\src\Psi\src\Resolve\Resolver.cs:line 52 at JetBrains.ReSharper.Psi.Resolve.AllNonQualifiedReferencesResolver.ProcessResolveElement(IElement topElement) in c:\A\work\Server\be08dc054b0f1225\src\Psi\src\Resolve\AllNonQualifiedReferencesResolver.cs:line 15 at JetBrains.ReSharper.Psi.Resolve.Resolver.ProcessFile(IFile file) in c:\A\work\Server\be08dc054b0f1225\src\Psi\src\Resolve\Resolver.cs:line 44 at JetBrains.ReSharper.BuildScriptSupport.DaemonStage.ScriptDaemonStageProcessBase.Execute() in c:\A\work\Server\be08dc054b0f1225\src\BuildScriptSupport\src\DaemonStage\ScriptDaemonStageProcessBase.cs:line 33 at JetBrains.ReSharper.Daemon.Impl.DaemonProcessBase.DoHighlighting(Boolean globalAnalysisStages, Boolean updateSolutionAnalysisResults) in c:\A\work\Server\be08dc054b0f1225\src\Daemon\src\Impl\DaemonProcessBase.cs:line 294 --- End of inner exception stack trace --- at JetBrains.Util.Logger.LogExceptionEx(Exception, String, Boolean) in c:\A\work\Server\be08dc054b0f1225\Platform\src\JetBrains.Util\src\Logger\Logger.cs:line 263 column 4 at JetBrains.Util.Logger.LogException(Exception) in c:\A\work\Server\be08dc054b0f1225\Platform\src\JetBrains.Util\src\Logger\Logger.cs:line 273 column 3 at JetBrains.ReSharper.Daemon.Impl.DaemonProcessBase.DoHighlighting(Boolean, Boolean) in c:\A\work\Server\be08dc054b0f1225\src\Daemon\src\Impl\DaemonProcessBase.cs:line 302 column 19 at JetBrains.ReSharper.Daemon.Impl.VisibleDocumentDaemonProcess.DoHighlighting(Boolean, Boolean) in c:\A\work\Server\be08dc054b0f1225\src\Daemon\src\Impl\VisibleDocumentDaemonProcess.cs:line 234 column 9 at JetBrains.ReSharper.Daemon.Impl.<>c__DisplayClass1.b__0() in c:\A\work\Server\be08dc054b0f1225\src\Daemon\src\Impl\VisibleDocumentDaemonProcess.cs:line 220 column 65 at JetBrains.ReSharper.Daemon.Impl.DaemonThread.ThreadProc() in c:\A\work\Server\be08dc054b0f1225\src\Daemon\src\Impl\DaemonThread.cs:line 132 column 13 at System.Threading.ThreadHelper.ThreadStart_Context(Object) at System.Threading.ExecutionContext.Run(ExecutionContext, ContextCallback, Object) at System.Threading.ThreadHelper.ThreadStart()