Hi, I created an .xlsx file using Apache POI XML (using XSSFWorkbook class). The .xlsx file created by a unit test could be opened from Excel but when I tried to open the .xlsx file from a real run, Excel won't open it with an error message like this in its pop up: ---- Excel cannot open the file 'myfile.xlsx' because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file. ----
Is there a way to make Excel printout more detailed error message? Are there any other debugging tips? I unzipped the generated .xlsx file and the one that can be opened, and I found these files are missing from the one that won't open. Do these need to exist? xl/theme/theme1.xml xl/connections.xml xl/queryTable/queryTable1.xml -- Kuro
