Issue Summary

In confluence 7.19.7, Pdf files in Attachments macro  show Unknown macro:'viewfile' when disabling Office Connector plugin.

This problem happened to pptx files as well.

It does not happen to  old version (7.16.0)

This is reproducible on Data Center: (yes) 

Steps to Reproduce

1. Create a test page, with Attachments macro
2. Attach a pdf file into the page
3. View the page, expand the pdf file from attachments macro
4. The pdf will be previewed normally
5. Disable Office Connector plugin
6. View the page, and expand the pdf file again

Expected Results

The pdf will be previewed normally

Actual Results

Unknown macro: 'viewfile'

Workaround

Currently there is no known workaround for this behavior.