Read-only attributes can be changed only at design time. There should be more specific errors preceding this one that explains the details of the errors.This message is used as a return value from functions that encounter errors. This error occurs when an attempt to retrieve a variable from a variables collection on a container during execution of the package occurs, and the variable is not there. If you do not see your error in the list, the error was raised by a component outside Integration Services.
The raw certificate data cannot be obtained from the supplied certificate object (error: %1).
This occurs when CPackage::put_Certificate Object cannot instantiate the Managed Helper object, when the Managed Helper object fails, or when the Managed Helper object returns a malformed array. Verify that you have the key pair for which the certificate was issued.
An attempt change to a read-only attribute on variable "%1" occurred.
This error happens when a read-only attribute for a variable is being changed at runtime.
A variable name may have changed or the variable is not being created.