I am having the same problem as this post, according to the comments of this post this issue was resolved in v0.9.3.
My versions are:
- xlwings: v0.11.4
- macOS: v10.13.2
- python: v3.6.2
- Excel for Mac: v15.41
I have attempted the app.books.open(filename) workaround but it makes no difference. Despite being updated past v0.9.3 I'm still unable to open a workbook in headless mode.
Is anyone able to suggest any workarounds or possible bugs? Thank you.