Is sData a file? May be you can try to check if it's opened with fopen and fclose functions?

>Here is the code:
>before this I have cleared the data and header docs;
>then I create a headersource and datasource using the same docs;
>The I merge the header and data docs with the output doc as below;
>

>LPARAMETERS oMemoDoc,sHeader,sData,cGrpId
>ASSERT VARTYPE(oMemoDoc)#'O' MESSAGE "Developer stop at MemoDoc for testing"
>
>LOCAL oMergedDocument
>* word app reference for mailmerge
>oWordApp = oMemoDoc.application
>APPLICATION.OLERequestPendingTimeout = 0   && 0 means no busy error message
>* make sure the merged document is selected
>oMemoDoc.select()
>*WAIT WINDOW "Before open header, data source"
>* attach header & data source to document
>oMemoDoc.MailMerge.OpenHeaderSource(sHeader)
>

>Next line is where I get "File in Use"
>

>oMemoDoc.MailMerge.OpenDataSource(sData)
>*WAIT WINDOW "header and data source open"+sHeader+', '+sData
>* Perform the mail merge
>oMemoDoc.MailMerge.Execute()
>
>* reference the merged document prior to printing
>oMergedDocument = oWordApp.ActiveDocument
>*WAIT WINDOW "Active Doc printing"+(oApp.UserPath+cGrpId+".doc")
>
>* save merged result
>IF LOWER(SUBSTR(oMemoDoc.name,RAT('_',oMemoDoc.name)+1,2)) = "pn"
>	oMergedDocument.SaveAs(oApp.UserPath+cGrpId+"Lst.doc")
>*	WAIT WINDOW "Doc saved"+(oApp.UserPath+cGrpId+"Lst.doc")
>ENDIF
>
>* print merged result
>oMergedDocument.PrintOut(.T.)
>wait "" timeout 5
>

>
>>>John, are you using the code from the Office automation book?. I am using oWord=createobject("word.application",9). Should I be using winWord.application? I get an error "class definition not found" when used.
>>>Chuck
>>
>>I didn't have any troubles with Office 2007.
>>BTW what is 9 passed as second parameter to CREATEOBJECT()?
>>Could you post the code that gives you troubles?