Why do you hae the /tmp folder in the PSModulePath variable?
I would suggest to remove all PowerCLI related directories in all folders mentioned in PSModuePath.
Then do a fresh install with Install-Module.
Not sure why you are doing the Save-Module part?
That should only be required when installing on a station that has no connection to the PSGallery.
Blog: lucd.info Twitter: @LucD22 Co-author PowerCLI Reference