I have tried to use version 4.0.1. But it fails when processing excel file with worksheets in Unicode (I'm using Microsoft Excel with Russian language).
Steps to reproduce error:
1) create ExcelPackage from excel file with 3 sheets: Template, Градуировка, Перецень АЦ
2) try to add list by copy sheet Template
```
xlPackage.Workbook.Worksheets.Add(sDate, template);
```
3) epplus fails with error "Vba module names can't contain unicode characters"
Version 3.1.3 works fine with the same excel file.
Comments: I attempted to reproduce this issue using the steps provided in version 4.0.4 and was unable to do so; it appears to be resolved.
Steps to reproduce error:
1) create ExcelPackage from excel file with 3 sheets: Template, Градуировка, Перецень АЦ
2) try to add list by copy sheet Template
```
xlPackage.Workbook.Worksheets.Add(sDate, template);
```
3) epplus fails with error "Vba module names can't contain unicode characters"
Version 3.1.3 works fine with the same excel file.
Comments: I attempted to reproduce this issue using the steps provided in version 4.0.4 and was unable to do so; it appears to be resolved.