Error Message: An unexpected Error has occurred.
Troubleshooting:
We have checked this Audit logs settings and it was enabled.
We have run all the reports one by one and all of them were having problem.
There is only site which was having issue.
Based on the correlation ID in the error message, Checked the ULS logs from the server and found the below logs.
Resolution:
Tried Goggling on the same issue with the keyword: System.InvalidCastException: Specified cast is not valid. at Microsoft.Office.RecordsManagement.Reporting.ReportData.GenerateNextReport().
Found only one reference which talks about the resolution:
Resolution Steps:
Go to Site Actions.
Choose to select Site Settings.
Under Site collection administration tab.
Choose to select Site collections features.
Look for Reporting feature. (It should be activated by default).
Click Deactivate and a warning message would appear, Select Deactivate this feature.
You will be taken to the site collection administration Feature list. Choose to click Activate.
And now try to run the Audit Logs Report and now you should be able to save the reports to desired library.
Note: You should have the site collection rights to perform the above given steps.
If you have any queries/questions regarding the above mentioned information then please let me know.
I would be more than happy to help you as well as resolves your issues, thank you.
Applies to: SharePoint Foundation Server 2010, SharePoint 2010.
