Hi Joshua,
Could you capture a screenshot of the installation fail error message and post it here for troubleshooting. Also, please provide the Office 365 plan you are using right now.
To fast troubleshoot the issue, you can click on the link below.
http://support.microsoft.com/kb/2684395
If the link above is not able to help you to solve your issue, please feel free to let me know.
Thanks,
Yang Yu