Buggish: Google Drive gadget broken on my Google Sites

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This is embedded in my sites page which was working the last time I was on which was a while ago. I have continued to add date to the spreadsheet in Google Drive. Today, I decided to go onto the sites page to see if the list was updated. Instead of the sheet, I saw the error above.

I attempted to modify the gadget. At first, clicking on the link to the spreadsheet did not work. I clicked Change button to reapply the correct sheet. Now, click on the link brings up the spreadsheet. After saving all the changes, I continue to get the error above. Clicking on the Open Sheet link at the bottom of the gadget brings up the proper spreadsheet.

I'll check back again at at a later time to see if this error is fixed. This is the first time that I saw the error.

Updated:
After further investigation, I found this error occurs with the new Google Spreadsheets. I tested with an older Google Spreadsheet which still works.