After upgrade of sites to SharePoint 2010 I'm missing the checkbox column

Hi all,

I've upgraded a site from MOSS2007 to SharePoint 2010. One of the features generates custom document libraries. After the upgrade I changed the look-and-feel to have the new SharePoint UI and I have the ribbon displayed everywhere. The problem I'm facing is that I do have the ribbon displayed for my custom libraries, but I do not have the checkbox column in front of the documents. Because of this I'm unable to select one or multiple files and start an action from the ribbon.

I guess this might be something in the scheme.xml, but am not sure. Anybody have an idea where I should start looking?

Thanks!

Peter

Update: The link of David did change settings for a short time, but after a refresh the settings were set back. Problem was in the views in the scheme.xml files of the features. These were still using the old CAML views instead of the new XSL views. After updating those and redeploying the features it all started to work!