Value cannot be null. (specific string in specific path)

Thanks Kenward and sorry for the delay.

Her a crash report from March 30:

<?xml version="1.0" encoding="UTF-8"?>

-<CrashLog>


-<User ChannelName="X1" Company="" CountryCode="41" Email="" InstallID="{fbcccc9b-a16d-42c8-a4ba-c48ce159e440}" LogID="0">

<UserDescription/>

</User>


-<CrashDetails MiniDumpFileName="1234abcd-5e8b-790c-5e8f-130994be5254" AppComponent="X1.exe" AppName="X1Pro" BuildNumber="5001dv" CrashDateInfo="Utc (Utc offset +02:00)" CrashDate="2014-03-30 06:20:02">


-<Data>

<DataValuePair>System.Object = </DataValuePair>

</Data>

<ErrorMessage>ArgumentNullException: Value cannot be null. Parameter name: uriSource</ErrorMessage>

<HelpLink/>

<StackTrace> at System.Windows.Media.Imaging.BitmapImage..ctor(Uri uriSource, RequestCachePolicy uriCachePolicy) at X1.UI.ListPane.ResultRowIcon.a(String A_0, BitmapSource A_1, Object A_2) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)</StackTrace>

<TypedValues>(String)ParamName=uriSource (Int32)HResult=-2147467261 </TypedValues>

<InnerException/>

<CurrentManagedStack>LogCrash at offset 833 in file:line:column <filename unknown>:0:0 a at offset 111 in file:line:column <filename unknown>:0:0 CatchException at offset 77 in file:line:column <filename unknown>:0:0 TryCatchWhen at offset 71 in file:line:column <filename unknown>:0:0 InvokeImpl at offset 641 in file:line:column <filename unknown>:0:0 RunInternal at offset 645 in file:line:column <filename unknown>:0:0 Run at offset 9 in file:line:column <filename unknown>:0:0 Run at offset 87 in file:line:column <filename unknown>:0:0 Invoke at offset 113 in file:line:column <filename unknown>:0:0 ProcessQueue at offset 671 in file:line:column <filename unknown>:0:0 WndProcHook at offset 179 in file:line:column <filename unknown>:0:0 WndProc at offset 330 in file:line:column <filename unknown>:0:0 DispatcherCallbackOperation at offset 128 in file:line:column <filename unknown>:0:0 InternalRealCall at offset 90 in file:line:column <filename unknown>:0:0 TryCatchWhen at offset 71 in file:line:column <filename unknown>:0:0 LegacyInvokeImpl at offset 700 in file:line:column <filename unknown>:0:0 SubclassWndProc at offset 320 in file:line:column <filename unknown>:0:0 DispatchMessage at offset 0 in file:line:column <filename unknown>:0:0 DispatchMessage at offset 0 in file:line:column <filename unknown>:0:0 PushFrameImpl at offset 274 in file:line:column <filename unknown>:0:0 RunInternal at offset 378 in file:line:column <filename unknown>:0:0 Run at offset 103 in file:line:column <filename unknown>:0:0 a at offset 48 in file:line:column <filename unknown>:0:0 Run at offset 1132 in file:line:column <filename unknown>:0:0 Main at offset 70 in file:line:column <filename unknown>:0:0 </CurrentManagedStack>

</CrashDetails>


-<ComputerDetails>


-<OS MaxProcessMemorySize="137438953344" OtherTypeDescription="" ProductType="1" OSProductSuite="256" OperatingSystemSKU="48" IsPrimaryOS="True" PAEEnabled="" OSLanguage="2057" CodeSet="1252">

<DetailedOSDescription>6.2.9200.0, , Win32NT</DetailedOSDescription>

<BootDevice>\Device\HarddiskVolume5</BootDevice>

<SystemDevice>\Device\HarddiskVolume7</SystemDevice>

<SystemDirectory>C:\Windows\system32</SystemDirectory>

<WindowsDirectory>C:\Windows</WindowsDirectory>

</OS>

<LastBootUpTime>19.42</LastBootUpTime>

<CPU>Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz - Intel64 Family 6 Model 62 Stepping 4</CPU>

<VirtualMem>Free: 26208716kb of 33492664kb</VirtualMem>

<PhysicalMem>Free: 27323736kb of 33492664kb</PhysicalMem>

<PageFileMem>Free: 0kb of 0kb</PageFileMem>


-<HDDs>

<LogicalHardDrive Size="255505461248" Free="147881345024" Name="C:"/>

<LogicalHardDrive Size="256058060800" Free="116968058880" Name="D:"/>

<LogicalHardDrive Size="4000650883072" Free="1864439926784" Name="E:"/>

<LogicalHardDrive Size="4000650883072" Free="3822455193600" Name="F:"/>

<LogicalHardDrive Size="3000589348864" Free="1190311755776" Name="H:"/>

<LogicalHardDrive Size="2500491997184" Free="1279620055040" Name="J:"/>

<LogicalHardDrive Size="255924891648" Free="239567294464" Name="S:"/>

</HDDs>

<OutlookVersion/>

<MapiVersion/>

<FirefoxVersion/>


-<DotNetVersions>

<DotNetVerion>2.0.50727.4927</DotNetVerion>

<DotNetVerion>3.0.30729.4926</DotNetVerion>

<DotNetVerion>3.5.30729.4926</DotNetVerion>

<DotNetVerion>4.5.51641</DotNetVerion>

<DotNetVerion>4.0.0.0</DotNetVerion>

</DotNetVersions>

</ComputerDetails>

</CrashLog>



And another from today (with another string):

<?xml version="1.0" encoding="UTF-8"?>

-<CrashLog>


-<User ChannelName="X1" Company="" CountryCode="41" Email="" InstallID="{fbcccc9b-a16d-42c8-a4ba-c48ce159e440}" LogID="0">

<UserDescription/>

</User>


-<CrashDetails MiniDumpFileName="1234abcd-44c7-6ed1-312e-589f1a857be2" AppComponent="X1.exe" AppName="X1Pro" BuildNumber="5001dv" CrashDateInfo="Utc (Utc offset +02:00)" CrashDate="2014-05-06 09:46:48">


-<Data>

<DataValuePair>System.Object = </DataValuePair>

</Data>

<ErrorMessage>ArgumentNullException: Value cannot be null. Parameter name: uriSource</ErrorMessage>

<HelpLink/>

<StackTrace> at System.Windows.Media.Imaging.BitmapImage..ctor(Uri uriSource, RequestCachePolicy uriCachePolicy) at X1.UI.ListPane.ResultRowIcon.a(String A_0, BitmapSource A_1, Object A_2) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)</StackTrace>

<TypedValues>(String)ParamName=uriSource (Int32)HResult=-2147467261 </TypedValues>

<InnerException/>

<CurrentManagedStack>LogCrash at offset 833 in file:line:column <filename unknown>:0:0 a at offset 111 in file:line:column <filename unknown>:0:0 CatchException at offset 77 in file:line:column <filename unknown>:0:0 TryCatchWhen at offset 71 in file:line:column <filename unknown>:0:0 InvokeImpl at offset 641 in file:line:column <filename unknown>:0:0 RunInternal at offset 645 in file:line:column <filename unknown>:0:0 Run at offset 9 in file:line:column <filename unknown>:0:0 Run at offset 87 in file:line:column <filename unknown>:0:0 Invoke at offset 113 in file:line:column <filename unknown>:0:0 ProcessQueue at offset 671 in file:line:column <filename unknown>:0:0 WndProcHook at offset 179 in file:line:column <filename unknown>:0:0 WndProc at offset 330 in file:line:column <filename unknown>:0:0 DispatcherCallbackOperation at offset 128 in file:line:column <filename unknown>:0:0 InternalRealCall at offset 90 in file:line:column <filename unknown>:0:0 TryCatchWhen at offset 71 in file:line:column <filename unknown>:0:0 LegacyInvokeImpl at offset 700 in file:line:column <filename unknown>:0:0 SubclassWndProc at offset 320 in file:line:column <filename unknown>:0:0 DispatchMessage at offset 0 in file:line:column <filename unknown>:0:0 DispatchMessage at offset 0 in file:line:column <filename unknown>:0:0 PushFrameImpl at offset 274 in file:line:column <filename unknown>:0:0 RunInternal at offset 378 in file:line:column <filename unknown>:0:0 Run at offset 103 in file:line:column <filename unknown>:0:0 a at offset 48 in file:line:column <filename unknown>:0:0 Run at offset 1132 in file:line:column <filename unknown>:0:0 Main at offset 70 in file:line:column <filename unknown>:0:0 </CurrentManagedStack>

</CrashDetails>


-<ComputerDetails>


-<OS MaxProcessMemorySize="137438953344" OtherTypeDescription="" ProductType="1" OSProductSuite="256" OperatingSystemSKU="48" IsPrimaryOS="True" PAEEnabled="" OSLanguage="2057" CodeSet="1252">

<DetailedOSDescription>6.2.9200.0, , Win32NT</DetailedOSDescription>

<BootDevice>\Device\HarddiskVolume5</BootDevice>

<SystemDevice>\Device\HarddiskVolume7</SystemDevice>

<SystemDirectory>C:\Windows\system32</SystemDirectory>

<WindowsDirectory>C:\Windows</WindowsDirectory>

</OS>

<LastBootUpTime>27.69</LastBootUpTime>

<CPU>Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz - Intel64 Family 6 Model 62 Stepping 4</CPU>

<VirtualMem>Free: 24477616kb of 33492668kb</VirtualMem>

<PhysicalMem>Free: 25133288kb of 33492668kb</PhysicalMem>

<PageFileMem>Free: 0kb of 0kb</PageFileMem>


-<HDDs>

<LogicalHardDrive Size="255505461248" Free="145644453888" Name="C:"/>

<LogicalHardDrive Size="256058060800" Free="112754208768" Name="D:"/>

<LogicalHardDrive Size="4000650883072" Free="1901525790720" Name="E:"/>

<LogicalHardDrive Size="4000650883072" Free="3788227416064" Name="F:"/>

<LogicalHardDrive Size="3000589348864" Free="1158514974720" Name="H:"/>

<LogicalHardDrive Size="2500491997184" Free="1288605704192" Name="J:"/>

<LogicalHardDrive Size="255924891648" Free="238512586752" Name="S:"/>

</HDDs>

<OutlookVersion/>

<MapiVersion/>

<FirefoxVersion/>


-<DotNetVersions>

<DotNetVerion>2.0.50727.4927</DotNetVerion>

<DotNetVerion>3.0.30729.4926</DotNetVerion>

<DotNetVerion>3.5.30729.4926</DotNetVerion>

<DotNetVerion>4.5.51641</DotNetVerion>

<DotNetVerion>4.0.0.0</DotNetVerion>

</DotNetVersions>

</ComputerDetails>

</CrashLog>

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