SQLDUMPER_ERRORLOG.log - SQL Server Analysis Service

Hi,

I have the vb.net windows application which use axpivottable object. As soon as it call the refresh of this object it was getting hung. We noticed the below error in sqldumper_errorlog.log file.

SQLDUMPER_ERRORLOG.log file content:

01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Input parameters: 4 supplied
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     ProcessID = 5628
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     ThreadId = 0
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     Flags = 0x0
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     MiniDumpFlags = 0x0
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     SqlInfoPtr = 0x01DC40C0
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     DumpDir = <NULL>
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     ExceptionRecordPtr = 0x00000000
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     ContextPtr = 0x00000000
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     ExtraFile = <NULL>
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     InstanceName = <NULL>
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE,     ServiceName = <NULL>
01/18/12 10:10:10, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Callback type 11 not used
01/18/12 10:10:15, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Callback type 7 not used
01/18/12 10:10:15, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, MiniDump completed: D:\Program Files\Microsoft SQL Server\MSSQL.2\OLAP\Log\SQLDmpr0015.mdmp
01/18/12 10:10:15, ACTION,               msmdsrv.exe, Watson Invoke: No

Once i restart the analysis service of sql server, it works fine.

We are not able to find the exact reason for this error. Please let me know what is the reason for this error, so that we can ensure that this does not occur again.