.PST, Time to Walk the Plank

I have PST Capture running on an Exchange 2010 server and I have copied some.pst files to that server. Upon trying to import some of these .psts into Exchange mailboxes, they fail with either an RPC error (Import error: The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)" or this error: (Import error: Could not find any resources appropriate for the specified culture or the neutral culture.  Make sure "RedGate.ExchangeArchiver.MAPI.Engine.Properties.Resources.resources" was correctly embedded or linked into assembly "Microsoft.Exchange.PSTCapture.MAPI.Engine" at compile time, or that all the satellite assemblies required are loadable and fully signed")

Usually, it will say transferring, go to 100% and then an error appears. Some files do import fine.  Looking at the capture logs, this appears at the end:

Hope someone can help...

22:09:59.016|Verbose|ExchangeHierarchy   |7  |GetDatabases for Exchange: PFM-SERV.PFM.local

22:09:59.016|Verbose|MailboxGetter       |7  |AdHarvester: Mailbox harvest success - got 12 boxes

22:10:31.880|Trace  |Listener            |5  |Accepted incoming connection from 192.168.100.35:15083

22:10:31.880|Trace  |CentralService      |3  |Received message from Agent

22:10:31.880|Trace  |Request parser      |3  |Processing configuration request from Agent

22:10:31.882|Debug  |DBComputer          |3  |SetStatus - Agent of PFM-SERV sent state  NotStarted

22:10:49.391|Verbose|AD                  |3  |AsyncUpdatedObject timer tick

22:10:49.403|Verbose|AD                  |4  |AsyncUpdatedObject timer tick

22:10:49.403|Verbose|AD                  |4  |AsyncUpdatedObject timer tick

22:10:49.403|Trace  |AD                  |4  |AsyncUpdatedObject update on timer

22:10:49.403|Verbose|AdoDb               |4  |SELECT name FROM 'LDAP://PFM-SERV.PFM.local/DC=PFM,DC=local'

22:10:49.421|Verbose|AD                  |3  |AsyncUpdatedObject timer tick

22:10:49.421|Trace  |AD                  |3  |AsyncUpdatedObject update on timer

22:10:49.972|Verbose|Server Provider     |4  |Get server took 0.5690325s - AD performance may not be optimal

22:10:49.973|Verbose|AdoDb               |4  |SELECT cn, distinguishedName FROM 'LDAP://PFM-SERV.PFM.local/CN=Databases,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=PFMGreen,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=PFM,DC=local' WHERE objectClass='msExchPrivateMDB' AND msExchMasterServerOrAvailabilityGroup='CN=PFM-SERV,CN=Servers,CN=Exchange Administrative Group 28FYDIBOHF23SPDLT29,CN=Administrative Groups,CN=PFMGreen,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=PFM,DC=local'

22:10:49.973|Verbose|Server Provider     |3  |Get server took 0.5520316s - AD performance may not be optimal

22:10:49.974|Verbose|AdoDb               |3  |SELECT distinguishedName, mail, msExchMailboxGuid, msExchArchiveGuid, legacyExchangeDN, sAMAccountName, homeMDB, name, msExchResourceCapacity, msExchResourceDisplay, msExchResourceMetaData, msExchResourceSearchProperties  FROM 'LDAP://PFM-SERV.PFM.local/DC=PFM,DC=local' WHERE msExchHideFromAddressLists<>TRUE AND objectClass='Person'

22:10:49.986|Verbose|AdoDb               |4  |SELECT msExchHostServerLink FROM 'LDAP://PFM-SERV.PFM.local/CN=Mailbox Database 0873069872,CN=Databases,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=PFMGreen,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=PFM,DC=local' WHERE objectClass='msExchMDBCopy'

22:10:59.161|Verbose|AD                  |3  |GetExchangeServerHostnames() returns:

PFM-SERV.PFM.local

22:10:59.161|Verbose|ExchangeHierarchy   |3  |GetDatabases for Exchange: PFM-SERV.PFM.local

22:10:59.161|Verbose|MailboxGetter       |3  |AdHarvester: Mailbox harvest success - got 12 boxes

22:10:59.220|Warn   |BposInfo            |3  |No BPOS username set

22:11:32.961|Trace  |Listener            |5  |Accepted incoming connection from 192.168.100.35:15092

22:11:32.972|Trace  |CentralService      |7  |Received message from Agent

22:11:32.972|Trace  |Request parser      |7  |Processing configuration request from Agent

22:11:32.974|Debug  |DBComputer          |7  |SetStatus - Agent of PFM-SERV sent state  NotStarted