Can't export Word docs to network drive

I can't export Word documents to a network drive. I can save the document in .pages format, but if I try to export, the software goes through the motions, but the Word document is never created. If I "Save As" and check "Save Copy as Word Document," I receive an error message "The document ... could not be exported as ....doc." At least I get an error message, which is better than thinking a document exported when it didn't. I can't find any way to report this bug to Apple.