SharePoint Data Connection Library error when opened using Report Builder

Hello,

We have a Data Connection Library in SharePoint 2010 and when users try to open this specific Data Connection Library they get the following error:

"Unable to open or save file.

Report Server has encountered a SharePoint error. ---> Microsoft.ReportingServices.Diagnostics.Utilities.SharePointException: Report Server has encountered a SharePoint error. ---> System.NullReferenceException: Object reference not set to an instance of an object."

I have created a new Data Connection Library and moved the contents and I was able to open it without issues. There are lots of connections and it is being used in webparts all over the SharePoint site, thus I would like to fix the issue with this library.

Thanks,

Yassar