Cannot connect to datasource after upgrading

Hello,
I upgraded an old version of RDM to the new version 7.5.0.0. I worked out of it for a few hours without issue then rebooted. When I logged back in to my system I got an error from RDM saying:


The current datasource is unavailable.
No error message available, result code: DB_SEC_AUTH_FAILED(0x80040E4D)

From log file:

[8/27/2012 7:48 PM]ERROR SILENT System.ArgumentException: Item has already been added. Key in dictionary: 'Devolutions.RemoteDesktopManager.Business.NotifierData[]' Key being added: 'Devolutions.RemoteDesktopManager.Business.NotifierData[]'
at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add)
at System.Collections.Hashtable.Add(Object key, Object value)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.GetSerializer(Type type)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists)
at Devolutions.RemoteDesktopManager.Business.BusinessHelper.GetArrayFromWeb[T](String url)
[8/27/2012 7:48 PM]ERROR System.Data.OleDb.OleDbException: No error message available, result code: DB_SEC_E_AUTH_FAILED(0x80040E4D).
at System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection)
at System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.OleDb.OleDbConnection.Open()
at Devolutions.RemoteDesktopManager.Business.DataSources.AccessConnectionDataSource.FetchVersion()
at Devolutions.RemoteDesktopManager.Business.DataSources.AccessConnectionDataSource.get_Version()
at Devolutions.RemoteDesktopManager.Business.DataSources.DatabaseConnectionDataSource.get_IsUpgradeRequired()
at Devolutions.RemoteDesktopManager.Managers.ConnectionManager.get_IsUpgradeRequired()
at Devolutions.RemoteDesktopManager.Managers.ConnectionManager.Upgrade()
at Devolutions.RemoteDesktopManager.Managers.ConnectionManager.LoadConnectionsFromDataSource(BaseConnectionDataSource connectionDataSource)


I looked up the error code and frankly couldn't understand what to do with the information I was given and the error codes that were similiar weren't exact. Any ideas?
Thank you in advance.
edited by rhonda on 8/27/2012