What I did is the following: 1. Create a XLS with Excel 2000 and add 10 checkbox controls 2. do the "readwrite test" by org.apache.poi.hssf.dev.HSSF java org.apache.poi.hssf.dev.HSSF in.xls out.xls 3. Open the out.xls with Excel with alert "Uable to read file"
Created attachment 16888 [details] a sample file the fail the readwrite test if you delete one checkbox from the worksheet, the test will pass.
Works as on 12Jan2007 http://issues.apache.org/bugzilla/show_bug.cgi?id=41366