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The merge process was unable to deliver the snapshot to the Subscriber. If using Web synchronization, the merge process may have been unable to create or write to the message file. When troubleshooting, restart the synchronization with verbose history logging and specify an output file to which to write.
COM object initialization failed for an XML Subscriber. Some reasons why merge replication did not apply schema changes to the Subscriber include the following:
A failure to create a directory to write the temporary snapshot files could have occurred.
A failure to enumerate schema articles could have occurred.
For SQL Server Compact Subscribers, a failure to reinitialize the subscription could have occurred.
If the object is message based, a failure to write to the message file could have occurred.
Run SQL Server Profiler and examine replmerg.log for failures. If you are using Web Synchronization, elevate the severity of the websync log, rerun the scenario, and check for errors in the websync.log file.
If you are using Web Synchronization, you can start Replmerg.exe and pass the -T 106 option to use trace flag 106. This enables you to see the messages that are sent to and from the Publisher. By adding the trace flag to the Replmerg.exe agent command line, the agent writes the client's input messages to a file that is named ExchangeID(guid).IN.XML, and writes the output messages to a file that is named ExchangeID(guid).OUT.XML. (In these file names, guid is the GUID of the Exchange Server session.) These files are created in the directory from which Replmerg.exe was invoked. For security, you should delete these files after you are finished.