I am using SQL Server 2008. Backed up my database. Uploaded it to Winhost and tried to restore it there but keep on getting "Invalid Characters" error. I had no problem restoring this database at another host. Tried both SQL 2008 and SQL 2008 R2 databases and got the same error.
can't really tell what's happening based on your description. pls open a support ticket at https://support.Winhost.com