Cannot open existing file. Error: Unknown relationship
*Created originally on Bitbucket by [dnk_k](https://bitbucket.org/%7B8818fd29-b3d0-4ee5-8222-a617f6f5797b%7D/)* Cannot open Excel file File "C:\Python35\lib\site-packages\openpyxl\packaging\relationship.py", line 97, in __getitem__ raise KeyError("Unknown relationship: {0}".format(key)) KeyError: 'Unknown relationship: ' *Attachments:* [Paychex-20161030-200255.xlsm](/uploads/3d566d099121c4e145b05243d905ee90/Paychex-20161030-200255.xlsm)
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