Merge Process Could Not Enumerate Changes At The Subscriber

Hi,



I've seen quite a few posts about this error message but so far no answers. I'm merge replicating between SQL Server 2005 SP2 and SQL Server 2005 Mobile. Everything seems to run really well until at some point I get the above error message while running the replication from the device. It seems to happen just after I've made a schema change on the server e.g. the latest one was adding some new columns (which allow nulls) to replicated tables.



I've switched on verbose logging and I get the following:



2007/04/27 13:57:06 Hr=00000000 Compression Level set to 1
2007/04/27 13:57:06 Hr=00000000 Count of active RSCBs = 0
2007/04/27 13:57:06 Thread=B04 RSCB=15 Command=OPWC Hr=00000000 Total Compressed bytes in = 846
2007/04/27 13:57:06 Thread=B04 RSCB=15 Command=OPWC Hr=00000000 Total Uncompressed bytes in = 1442
2007/04/27 13:57:06 Thread=B04 RSCB=15 Command=OPWC Hr=00000000 Responding to OpenWrite, total bytes = 846
2007/04/27 13:57:06 Thread=B04 RSCB=15 Command=OPWC Hr=00000000 C:Program FilesMicrosoft SQL Server 2005 Mobile Editionserverctmobilesql30.7AABD0FB7460_010309C7-9030-4CF9-7D60-A64608CD62F7 0
2007/04/27 13:57:06 Thread=E54 RSCB=15 Command=SYNC Hr=00000000 Synchronize prepped 0
<PARAMS RSCB="15" HostName="" Publisher="WINSERVER" PublisherNetwork="" PublisherAddress="" PublisherSecurityMode="1" PublisherLogin="" PublisherDatabase="CompacTimesheet_Staging" Publication="CompacTimesheet_Staging" ProfileName="DEFAULT" SubscriberServer="CTimeMobile - 7aabd0fb7460" SubscriberDatabasePath="Program FilesCompac TimesheetDataCompacTimesheetMobile.sdf" Distributor="WINSERVER" DistributorNetwork="" DistributorAddress="" DistributorSecurityMode="1" DistributorLogin="" ExchangeType="3" ValidationType="0" QueryTimeout="300" LoginTimeout="15" SnapshotTransferType="0" DistributorSessionId="452"/>
2007/04/27 13:57:06 Thread=E54 RSCB=15 Command=SYNC Hr=80045019 The merge process could not enumerate changes at the 'Subscriber'. When troubleshooting, restart the synchronization with verbose history logging and specify an output file to which to write. -2147200999
2007/04/27 13:57:06 Thread=E54 RSCB=15 Command=SYNC Hr=80045645 The process was successfully stopped. -2147199419
2007/04/27 13:57:06 Thread=E54 RSCB=15 Command=SCHK Hr=80004005 SyncCheck responding 0
2007/04/27 13:57:06 Thread=E54 RSCB=15 Command=SCHK Hr=00000000 Removing this RSCB 0



The error message doesn't seem very helpful. Is there another way to find out what is causing the problem? I've tried reinitializing all subscriptions and generating a new snapshot but it makes no difference. The only way I've found to fix this is to delete the database on the subscriber and synchronise again (losing all subscriber data since the last sync).



Regards,



Greg