I just migrated from MOSS 2007 to SharePoint 2010 foundations. I installed SharePoint on server and used a separate SQL server. I did get some errors during upgrade due to webparts/assemblies/features being missing but I don't think this is causing the error.
I can't get to the default homepage, I get the error below. I can get to other sub-sites or other sections of the main site. I have tried using SharePoint designer to look at the page but it won't work either.
I looked at the log file for the correlation ID but it doesn't have any other helpful data.
The file or folder name contains characters that are not permitted. Please use a different name. Troubleshoot issues with Microsoft SharePoint Foundation. Correlation ID: 55fb2c34-6559-4db8-ae1a-92599cc67ea6 Date and Time: 3/4/2016 2:59:00 PM