[web2py] plugin_wiki attachment KeyError: 'file'

[nic]

I am using 1.95.1 and have just created a new simple app and added the
plugin_wiki, which I have done before in 1.94.xx.

When I try to Attach a file from a plugin_wiki page I get the
following error:

Traceback (most recent call last):
  File "/home/www-data/web2py/gluon/restricted.py", line 181, in
restricted
    exec ccode in environment
  File "/home/www-data/web2py/applications/test/views/plugin_wiki/
attachments.html", line 67, in <module>
  File "/home/www-data/web2py/gluon/dal.py", line 3532, in __getattr__
    return self[key]
  File "/home/www-data/web2py/gluon/dal.py", line 3523, in __getitem__
    return dict.__getitem__(self, key)
KeyError: 'file'

Have tried several times and downloaded the latest plugin_wiki file.
Any help gratefully accepted.

Best Regards,
Nic.