Soory, I am facing the problem that even if I downgrade the SQL Server  2008 R2 to SQL Sever 2008, the DB validation failed message still exists. Is there any  way to tackle this problem. Thank you.

Yes, I am facing the same problem that even if I downgrade the SQL Server 2008 R2 to SQL Sever 2008, the error message still exists. Is there any way to tackle this problem. Thank you.

So the error occurs if I set the version lower than 9?If I set the version to 9.0 or later, does it mean that the form cannot be opened below version 9.0? Thanks.

So does it mean thatIf I use LC Designer to design a PDF form and select XDF in submit button, user can submit both PDF and XML to SharePoint ONLY when they use either Acrobat or Reader Extension ?PDF and XML submission can only be found successfully if I submit the form through Network Drive but no...

So even if I choose XDP and check the includes "PDF" checkbox, this is not possible to submit PDF and XDP (2 files) to SharePoint through web?