title: How to fix unreadable content error with Open XML SDK 2.0 excel using SpreadsheetWorker?
body: <p><strong>[SOLVED (see answer below)]</strong> I am using SpreadsheetWorker API to make working with Open XML SDK 2.0 easier. I have an excel spreadsheet that I use as a template when I generate new excel spreadsheets through SpreadsheetWorker. I am getting a "found unreadable content" error when I open my generated files, and excel will correct the problems with the file if you allow it. This is not suitable for production.</p>