On startup, Windchill is connecting to the DB and is trying to query the Repository table. But SQL Server is saying that it doesn't know of any table with this name. Log into this Database through the SQL Server Management Studio and try running the query:
SELECT * FROM Repository;
If this returns the same 'Invalid object name' error message, then something must have gone wrong when importing the DB on the target system. If this query does successfully return entries, then check the DB related settings in db.properties.