When deleting the signature using Acrobat 9.0 -server threws an exception error displays

Question

Hi Everyone,
I have built an application using VC++ ,in my application i try to sign a document using Acrobat 9.0 ,it gets properly signed and when i try to remove the signature it throws an exception that " Server threws an exception" ,the same code if executed in Acrobat in 7.0 is properly working.
The code is as below
DISPID dispid2;
OLECHAR *methodName2 = { L"removeField" };
dispparam1.cArgs = 1;
dispparam1.rgvarg = new VARIANT[ dispparam1.cArgs ];
dispparam1.rgvarg[ 0 ].vt = VT_BSTR;
dispparam1.rgvarg[ 0 ].bstrVal = varResult.bstrVal;
dispparam1.cNamedArgs = 0;
dispparam1.rgdispidNamedArgs = NULL;
hr = jso->Invoke( dispid2, IID_NULL, GetUserDefaultLCID(),
DISPATCH_METHOD, &dispparam1, NULL, NULL, NULL );
here after executing this line the hr throws "Server thres an exception"
What could be the reason please throw ur ideas.
Regards,
Nethaji

Answer 1

While deleting manually using acrobat 9.0 we are able to deleted it. But while deleting the same through code we get the following exception
hr = jso->Invoke( dispid2, IID_NULL, GetUserDefaultLCID(),
DISPATCH_METHOD, &dispparam1, NULL, &exceptionInfo,
&puArgErr );
ExceptionInfo = "NotAllowedError: Security settings prevent access
to this property or method."
puArgErr = 0
Exception id : 0x80020009
How to give the permission to invoke this method?