Silverlight Plug-in Error Messages
This topic lists the error messages that come from the native code implementation of the Silverlight plug-in, and the native code level of the object tree and the XAML parser. The error messages are mainly relevant if you use the JavaScript API technique for error handling (OnError ) or for general script-level debugging during development.
Note Handling errors for the JavaScript API is described in the topic Error Handling .
The error messages might not be relevant to managed user code exception handling with the UnhandledException event. However, in many cases, native errors can occur when you make managed calls to members that use functionality in the core. The native errors might be useful debugging clues during the development phase to determine what aspect of the managed call is not working as expected.
The following table lists the error codes and corresponding error messages. The error messages are displayed only when you have the Silverlight developer runtime installed. For more information, see Silverlight Tools . The end-user runtime provides error codes only, but you can use the following table to look up the corresponding error message.
In many cases, the error message will provide sufficient information for you to diagnose and resolve the error. However, some errors are rare and do not provide an explanatory error message. Additionally, some errors can occur in a wide variety of situations, or due to unforeseen conditions. This makes it difficult to provide general-purpose troubleshooting documentation for plug-in errors.
If you encounter an error that you cannot resolve using the information in the following table, you can find additional help on the Silverlight forums by searching for the error code. If you do not find an existing post that describes your situation, create a new post that includes the error code and describes your scenario. These forums are regularly monitored by the Silverlight product team and developer community, and provide the best way to troubleshoot specific error conditions.
| Error Code |
Error Message |
| 1001 |
AG_E_UNKNOWN_ERROR |
| 2000 |
Document is not well-formed XAML. |
| 2001 |
DTDs are not allowed. |
| 2002 |
Entity references to named entities other than lt, gt, amp, apos, and quot are not allowed. |
| 2003 |
Entity definitions are not allowed. |
| 2004 |
Only UTF-8 and UTF-16 encodings are supported. |
| 2005 |
Unknown namespace %0. |
| 2007 |
Unknown element: %0. |
| 2008 |
Cannot specify the value multiple times for properties. |
| 2009 |
Cannot specify content for %0 and set its %1 property at the same time. |
| 2010 |
%0 does not support %1 as content. |
| 2011 |
%0 does not support text content. |
| 2012 |
Unknown attribute %0 on element %1. |
| 2013 |
Attribute %0 value is out of range. |
| 2014 |
The attribute %0 is read only and cannot be set. |
| 2015 |
Cannot declare custom namespaces in JavaScript. |
| 2016 |
Cannot specify both Name and x:Name attributes. |
| 2017 |
Null is not a legal value for attribute %0. |
| 2018 |
The element %0 does not support attributes. |
| 2019 |
Xaml may not use base type names, use %0 instead. |
| 2020 |
Invalid Property: %0. |
| 2021 |
Invalid enum value. |
| 2022 |
Unknown Color: %0. |
| 2023 |
%0 is not an event. |
| 2024 |
Invalid attribute value %0 for property %1. |
| 2025 |
AG_E_PARSER_ATTRIBUTE |
| 2027 |
AG_E_PARSER_ELEMENT |
| 2028 |
The name already exists in the tree: %0. |
| 2030 |
Property element %0 cannot be used inside another property element. |
| 2031 |
The property element %0 must appear before other content. |
| 2033 |
Cannot specify the value multiple times for property: %0. |
| 2034 |
Elements in a ResourceDictionary must have x:Key or x:Name attribute. |
| 2035 |
The element is not valid in the given namespace. |
| 2036 |
XamlReader.Load() does not accept event handlers. |
| 2100 |
AG_E_INIT_CALLBACK |
| 2101 |
Failed to initialize the application's root visual |
| 2102 |
Invalid source file specified on Silverlight plug-in. Expected Uri for application file |
| 2103 |
Invalid or malformed application: Check manifest |
| 2104 |
Could not download the Silverlight application. Check web server settings |
| 2105 |
Failed to load pre-requisites for the application |
| 2106 |
Failed to load the application. It was built with an obsolete version of Silverlight |
| 2107 |
Splash screen file needs to be on the same domain as the application |
| 2108 |
Failed to download the splash screen |
| 2150 |
Failed to load a platform extension. Possibly corrupt or non-existent file: %0 |
| 2152 |
Failed to download a platform extension: %0 |
| 2153 |
Failed to load a platform extension. Possibly corrupt or invalid file: %0 |
| 2201 |
AG_E_RUNTIME_INVALID_CALL |
| 2202 |
AG_E_RUNTIME_FINDNAME |
| 2203 |
AG_E_RUNTIME_SETVALUE |
| 2204 |
AG_E_RUNTIME_GETVALUE |
| 2205 |
AG_E_RUNTIME_ADDEVENT |
| 2206 |
AG_E_RUNTIME_DELEVENT |
| 2207 |
AG_E_RUNTIME_METHOD |
| 2208 |
AG_E_RUNTIME_GETHOST |
| 2209 |
AG_E_RUNTIME_GETPARENT |
| 2210 |
AG_E_INVALID_ARGUMENT |
| 2211 |
AG_E_RUNTIME_HTML_ACCESS_RESTRICTED |
| 2212 |
Animation target not specified. |
| 2213 |
Cannot resolve TargetName %0. |
| 2214 |
Cannot resolve TargetProperty %0 on specified object. |
| 2215 |
%0 cannot be used to animate property %1 due to incompatible type. |
| 2216 |
Multiple animations in the same containing Storyboard cannot target the same property on a single element. |
| 2217 |
KeyTime property on KeyFrame object must be set to a non-negative TimeSpan value. |
| 2218 |
Operation is not valid on an active Animation or Storyboard. Root Storyboard must be stopped first. |
| 2219 |
Operation is not allowed on a non-root Storyboard. |
| 2220 |
Cannot determine Storyboard Duration. |
| 2221 |
Shader file %0 not found. |
| 2222 |
Invalid shader. |
| 2250 |
AG_E_RUNTIME_MANAGED_UNKNOWN_ERROR |
| 2251 |
AG_E_RUNTIME_MANAGED_ACTIVATION |
| 2252 |
AG_E_RUNTIME_MANAGED_ASSEMBLY_DOWNLOAD |
| 2253 |
AG_E_RUNTIME_MANAGED_ASSEMBLY_LOAD |
| 2254 |
AG_E_PARSER_UNKNOWN_TYPE |
| 2255 |
AG_E_PARSER_BAD_TYPE |
| 2256 |
AG_E_PARSER_BAD_NATIVE_TYPE |
| 2257 |
AG_E_PARSER_CREATE_OBJECT_FAILED |
| 2258 |
AG_E_PARSER_PROPERTY_NOT_FOUND |
| 2259 |
AG_E_PARSER_BAD_PROPERTY_TYPE |
| 2260 |
AG_E_PARSER_BAD_PROPERTY_VALUE |
| 2261 |
AG_E_PARSER_ROOT_NOT_CUSTOM |
| 2262 |
AG_E_PARSER_NAMESPACE_NOT_SUPPORTED |
| 2263 |
AG_E_PARSER_MISSING_DEFAULT_NAMESPACE |
| 2264 |
AG_E_PARSER_INVALID_XMLNS |
| 2265 |
AG_E_PARSER_INVALID_CLASS |
| 2266 |
AG_E_RUNTIME_MANAGED_BAD_DLR_SCRIPT |
| 2267 |
AG_E_PARSER_INVALID_XCODE_TAG |
| 2268 |
AG_E_PARSER_ELEMENT_IGNORED |
| 2269 |
Elements in a ResourceDictionary must not set both x:Name and x:Key, or x:Key twice |
| 2270 |
Attribute x:Key set on an invalid object, only objects in a ResourceDictionary can have x:Key |
| 2271 |
Improper syntax for Static Resource (ie: {StaticResource Key}) |
| 2272 |
Cannot find a Resource with the Name/Key %0 |
| 2273 |
Elements in the same ResourceDictionary cannot have the same x:Key |
| 2274 |
AG_E_RUNTIME_MANAGED_ASSEMBLY_NOT_FOUND |
| 2275 |
Invalid characters in Source Uri. |
| 3000 |
AG_E_UNABLE_TO_PLAY |
| 3001 |
AG_E_INVALID_FILE_FORMAT |
| 3002 |
AG_E_NOT_FOUND |
| 3003 |
AG_E_MEDIA_DISCONNECTED |
| 3004 |
Invalid ASX element |
| 3005 |
Invalid ASX attribute |
| 3006 |
Unsupported ASX element |
| 3007 |
Unsupported ASX attribute |
| 3008 |
ASX parse error |
| 4000 |
AG_E_ABORT_FAILED |
| 4001 |
AG_E_NETWORK_ERROR |
| 4002 |
AG_E_ACCESS_DENIED |
| 4003 |
AG_E_INVALID_POLICY |
| 4004 |
AG_E_MANAGED_EXCEPTION |
| 4005 |
XamlReader.Load() does not support x:Class. |
| 4006 |
Only the root element can have an x:Class attribute. |
| 4007 |
The root element must be |
| 4008 |
Layout cycle detected. Layout could not complete. |
| 4009 |
Element is already the child of another element. |
| 4010 |
The ItemsControl.ItemsPanelTemplate must have a derivative of Panel as the root element. |
| 4011 |
Setting the Template property on a UserControl is not supported. |
| 4012 |
Cannot explicitly modify Children collection of Panel used as ItemsPanel for ItemsControl. ItemsControl generates child elements for Panel. |
| 4013 |
Cycle detected in merged resource dictionaries |
| 4014 |
Local values are not allowed in resource dictionary with Source set |
| 4015 |
This Style's hierarchy of BasedOn references contains a loop. |
| 4016 |
Can only base on a Style with target type that is base type of this style's target type. |
| 4017 |
A Style cannot be based on itself. |
| 4018 |
After a Style is in use (sealed), it cannot be modified. |
| 4019 |
Must have non-null value for TargetType. |
| 4020 |
'%0' is not a valid value for property '%1'. |
| 4021 |
Using NavigationState requires a hidden |