Automatic MOLAP cube : Proactive caching was cancelled because newer data became available

When I process the cube manually after processing Dimension, It works fine. But when I append data into database column, It performs proactive caching, at that time it fails.
Sometimes: It does not get key attribute because measure gets processed before dimension
and sometimes it gives error:  
Proactive caching was cancelled because newer data became available  Internal error: The operation terminated unsuccessfully. OLE DB error:
OLE DB or ODBC error: Operation canceled; HY008. Errors in the OLAP storage engine: An error occurred while the dimension, with the ID of 'call dim Monthly 201401 2', Name of 'call dim Monthly
201401 2' was being processed. Errors in the OLAP storage engine: An error occurred while the 'MSW' attribute of the 'call dim Monthly 201401 2' dimension from the 'callAnalysisProject' database was being processed.  etc....

I have also seen this error occur in other scenarios.
In the first if you have set Pro-Active caching to refresh every 1 minute and your query takes 2 minutes to refresh the error above can be displayed.  Solution increase your refresh time or tune your Pro-Active caching query.
In connection with the above if your server is limited on available resources this can also cause the slower query response times during refresh and the message above.

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