We are using an approval process workflow, and after the first person reviewed and approved the document, it was sent to the second user. Once that user received notification to review it, the initiator received notification that an error had occurred. I have been able to resend the link to the second person in the workflow, but the options for approving or rejecting are greyed out, and that person cannot complete her portion of the workflow. This should not be a permissions issue as this workflow has been running for two years with the same people involved. The exact error message is:
"Error in task. <nativehr>0x80070005</nativehr><nativestack></nativestack>".