mtpstoolkit RatingBehavior related to AJAX?

Unfortunately, I forgot what website I was visiting when I encountered the following dialog:



Assertion Failed: Unrecognized tag mtpstoolkit:RatingBehavior

Break into debugger?

I have no concrete idea what the dialog is related to, but I suspect it has to do with some AJAX framework. Interestingly, googling mtpstoolkit (groups search here) currently proves to be rather fruitless. The stack of the thread "owning" the dialog (with a large number of calls in jscript.dll) seems to support the AJAX theory:

ntoskrnl.exe!KiSwapContext+0x2e
ntoskrnl.exe!KiFastCallEntry+0xf8
ntdll.dll!KiFastSystemCallRet
USER32.dll!NtUserWaitMessage+0xc
USER32.dll!InternalDialogBox+0xd0
USER32.dll!SoftModalMessageBox+0x938
USER32.dll!MessageBoxWorker+0x2ba
USER32.dll!MessageBoxIndirectW+0x56
ieframe.dll!SHFusionMessageBoxIndirect+0x26
ieframe.dll!CDocHostUIHandler::ShowMessage+0x128
ieframe.dll!CDocHostUIHandler::Exec+0xe6
ieframe.dll!CDocObjectHost::OnExec+0xcb1
ieframe.dll!CDocObjectHost::Exec+0xd7
mshtml.dll!CreateHTMLPropertyPage+0x2503b
mshtml.dll!CreateHTMLPropertyPage+0x22f72
mshtml.dll!CreateHTMLPropertyPage+0x8980
mshtml.dll!CreateHTMLPropertyPage+0x3f40c
mshtml.dll!DllGetClassObject+0xc53d3
mshtml.dll!DllGetClassObject+0xca51f
mshtml.dll!DllGetClassObject+0xca498
mshtml.dll!DllGetClassObject+0xca353
jscript.dll!IDispatchExInvokeEx2+0xac
jscript.dll!IDispatchExInvokeEx+0x56
jscript.dll!InvokeDispatchEx+0x78
jscript.dll!VAR::InvokeByDispID+0x7e
jscript.dll!CScriptRuntime::Run+0x1675
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x16c9
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x1675
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x1675
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x1675
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x1675
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!JsFncCall+0x8e
jscript.dll!NatFncObj::Call+0x41
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x1675
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x1675
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x16c9
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!JsFncApply+0xc4
jscript.dll!NatFncObj::Call+0x41
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!VAR::InvokeByName+0x165
jscript.dll!VAR::InvokeDispName+0x43
jscript.dll!VAR::InvokeByDispID+0xb9
jscript.dll!CScriptRuntime::Run+0x1675
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!NameTbl::InvokeInternal+0x40
jscript.dll!VAR::InvokeByDispID+0xfd
jscript.dll!CScriptRuntime::Run+0x16c9
jscript.dll!ScrFncObj::Call+0x8d
jscript.dll!CSession::Execute+0xa1
jscript.dll!NameTbl::InvokeDef+0x179
jscript.dll!NameTbl::InvokeEx+0xcb
mshtml.dll+0x2234
mshtml.dll!DllGetClassObject+0x24151
mshtml.dll!DllGetClassObject+0x77fb6
mshtml.dll!DllGetClassObject+0x7925f
mshtml.dll!DllGetClassObject+0x6f679
mshtml.dll!DllGetClassObject+0x9f5de
mshtml.dll!DllGetClassObject+0xb63c7
USER32.dll!InternalCallWinProc+0x28
USER32.dll!UserCallWinProcCheckWow+0x150
USER32.dll!DispatchMessageWorker+0x306
USER32.dll!DispatchMessageW+0xf
avant.exe+0x5df02
avant.exe+0x5df5b
avant.exe+0x39941f

Anyone know what precisely mtpstoolkit is a part of?

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