Cannot save an Excel file as PDF
Previously, I was able to save Word, Powerpoint and Excel files as PDF files.
For some reason, I now cannot convert Excel files to PDF, but can still convert Word and Powerpoint.
After saving my Excel file, I choose "Save Adobe PDF", and the following window pops up:

I then click "Convert to PDF", and I am promtped for a file name and location. After completing that, I click "Save". Then the following window pops up, but where the process used to continue, nothing further happens.

Can anyone help?
