Solve : Cant open spreadsheet in microsoft works?

1.	Solve : Cant open spreadsheet in microsoft works?
Answer» Message comes up that says WORKS cannot OPEN another spreadsheet or data base. You can only have 6 open at once. Please close one and try again. I don't have any SPREADSHEETS or data bases open, what is the problem? I scanned it for viruses and it scanned clean.Is it a FILE that was created with Works, or another software?Works. I've ALSO tried to open it with Word, Excel and Excel viewer but none will do the job.

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