Merged cells cause problems when extracting the data

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What steps will reproduce the problem?
1. Open and try to get data out of an excel document that contains merged cells
2.
3.

What is the expected output? What do you see instead?

DataTable with missing columns, sometimes a datatable with nothing in it is
returned; if the excel document contains merged cells.

What version of the product are you using? On what operating system?
Latest build from this site.

Please provide any additional information below.
Row / column enumeration must have some issue with merged cells.
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Original issue reported on code.google.com by `ihsan...@gmail.com` on 26 Nov 2009 at 2:36

No source file or test is named. Start by locating the Excel data-extraction and row/column enumeration entry points, then reproduce the issue with a workbook containing merged cells. Done means extraction returns a DataTable with the expected columns and data instead of missing columns or an empty table.

Written by the indexing model from the issue text.