Quoting Qubit:

"(Per this question:
http://ask.libreoffice.org/question/4203/cant-open-ms-word-documents-after-upgrade-to/)

"The allowed upload filetypes (extensions) are: '.jpg', '.jpeg', '.gif', '.bmp',
'.png', '.tiff', '.odt', '.ods', '.odp', '.odg', '.odc', '.odf', '.odi',
'.odm', '.ott', '.ots', '.otp', '.otg', '.odb'

"This list excludes .doc and .zip, two filetypes that would be very useful in
helping to triage issues and figure out user problems. The list of filetypes
allowed on bugzilla is much more extensive.

"Personally, I'd be okay if we adopted a policy of bumping any user-support
questions to bugzilla if we need to look at example files, etc. Bugzilla is
probably more suited to dealing with this type of user inquiry, however we
really would need to make sure that bugreports are dealt with promptly so we
encourage users to come back and report bugs/problems in the future."