diff --git a/lib/icinga/plugin/New-IcingaCheck.psm1 b/lib/icinga/plugin/New-IcingaCheck.psm1
index 6134729..2524d77 100644
--- a/lib/icinga/plugin/New-IcingaCheck.psm1
+++ b/lib/icinga/plugin/New-IcingaCheck.psm1
@@ -40,11 +40,18 @@ function New-IcingaCheck()
 
     $Check | Add-Member -membertype ScriptMethod -name 'HandleDaemon' -value {
         # Only apply this once the checkcommand is set
-
         if ([string]::IsNullOrEmpty($this.checkcommand) -Or $global:IcingaDaemonData.FrameworkRunningAsDaemon -eq $FALSE) {
             return;
         }
 
+        if ($global:IcingaDaemonData.ContainsKey('BackgroundDaemon') -eq $FALSE) {
+            return;
+        }
+
+        if ($global:IcingaDaemonData.BackgroundDaemon.ContainsKey('ServiceCheckScheduler') -eq $FALSE) {
+            return;
+        }
+
         if ($global:IcingaDaemonData.BackgroundDaemon.ServiceCheckScheduler.ContainsKey($this.checkcommand)) {
             if ($global:IcingaDaemonData.BackgroundDaemon.ServiceCheckScheduler[$this.checkcommand]['results'].ContainsKey($this.name) -eq $FALSE) {
                 $global:IcingaDaemonData.BackgroundDaemon.ServiceCheckScheduler[$this.checkcommand]['results'].Add(
diff --git a/lib/icinga/plugin/Write-IcingaPluginOutput.psm1 b/lib/icinga/plugin/Write-IcingaPluginOutput.psm1
index 78b396c..c9a8746 100644
--- a/lib/icinga/plugin/Write-IcingaPluginOutput.psm1
+++ b/lib/icinga/plugin/Write-IcingaPluginOutput.psm1
@@ -7,6 +7,8 @@ function Write-IcingaPluginOutput()
     if ($global:IcingaDaemonData.FrameworkRunningAsDaemon -eq $FALSE) {
         Write-Host $Output;
     } else {
-        $IcingaThreadContent['Scheduler']['PluginCache'] += $Output;
+        if ($global:IcingaDaemonData.IcingaThreadContent.ContainsKey('Scheduler')) {
+            $global:IcingaDaemonData.IcingaThreadContent['Scheduler']['PluginCache'] += $Output;
+        }
     }
 }
diff --git a/lib/icinga/plugin/Write-IcingaPluginPerfData.psm1 b/lib/icinga/plugin/Write-IcingaPluginPerfData.psm1
index bdc474e..dc1221c 100644
--- a/lib/icinga/plugin/Write-IcingaPluginPerfData.psm1
+++ b/lib/icinga/plugin/Write-IcingaPluginPerfData.psm1
@@ -37,7 +37,9 @@ function Get-IcingaPluginPerfDataContent()
                     $cachedresult = (New-IcingaPerformanceDataEntry -PerfDataObject $data -Label $SearchEntry -Value $checkresult.Value);
 
                     if ($AsObject) {
-                        $global:IcingaThreadContent['Scheduler']['PluginPerfData'] += $cachedresult;
+                        if ($global:IcingaDaemonData.IcingaThreadContent.ContainsKey('Scheduler')) {
+                            $global:IcingaDaemonData.IcingaThreadContent['Scheduler']['PluginPerfData'] += $cachedresult;
+                        }
                     }
                     $PerfDataOutput += $cachedresult;
                 }
@@ -46,7 +48,9 @@ function Get-IcingaPluginPerfDataContent()
             $compiledPerfData = (New-IcingaPerformanceDataEntry $data);
 
             if ($AsObject) {
-                $global:IcingaThreadContent['Scheduler']['PluginPerfData'] += $compiledPerfData;
+                if ($global:IcingaDaemonData.IcingaThreadContent.ContainsKey('Scheduler')) {
+                    $global:IcingaDaemonData.IcingaThreadContent['Scheduler']['PluginPerfData'] += $compiledPerfData;
+                }
             }
             $PerfDataOutput += $compiledPerfData;
         }