ms excel has no problems opening this file(attached), but POI (try BiffViewer) gets the following exception (using jakarta-poi-1.9.0- dev-20021024.jar): java.io.IOException: Invalid header signature; read 4503629692403721, expected - 2226271756974174256 at org.apache.poi.poifs.storage.HeaderBlockReader.<init>(HeaderBlockRead er.java:124) at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSyste m.java:120) at org.apache.poi.hssf.dev.BiffViewer.run(BiffViewer.java:106) at org.apache.poi.hssf.dev.BiffViewer.main(BiffViewer.java:687)
Created attachment 3613 [details] excel file
This is an MS Excel 2.1 file. We specifically state we support 97+. To give you an idea. The last version of excel for win 3.1 was 4.x. I assume there was a 3.x. Just to give you an idea: http://www.baarns.com/History/ - This version of Excel ran on a 286. So I have no plans to support Excel 2.1. Sorry. (To verify this, try saving the file using a modern version of excel. It will ask you if you wish to upgrade the format from Excel 2.1)
that's good enough, thank you