I ran into the annoying Could not complete the operation due to error 80020101 bug today. I clearly am not the only one (Google: Could not complete the operation due to error 80020101). This was an old bug in jQuery that was squashed and apparently is back in jQuery 1.7.2 except it isn’t back.
The original bug was related to HTML comments. This was not the cause in my case. It was a query string variable. The fix is simple, take out the query string from the URL.
Change it from this
EDIT: Alternate Solution
No more Could not complete the operation due to error 80020101