When I converted an Access97 application to Access2007, there was a missing reference "Utility". I unchecked it and it seems to work well except the radio buttons. I have the IT to upgrade to Office2010 and I then converted the same application (which is in 2007) to Access2010. Now there is no missing reference, but it ceased to work. When I complied, it stucks on Date. I have tried all methods, such as linking to "Utility.ACCDA" and still wouldn't work. What am I missing? Is there anything wrong with upgrading from 2007 to 2010?