Updated to 2.2 broke all network content folders

[tasadam]

I updated to 2.2 and now all my content folders don't work.
Z:\Music
Z:\Share\CD
U:\SACD 5.1
Z:\Music3\Music Videos
I tried again using IP addresses instead of mapped drive letters.
No joy. The error states, in red:
Not a valid file; correct highlighted value and retry
I have searched for the 2.1.2 installer so I can roll back and enjoy music again but I cannot even find a place to download older versions.
I am very frustreated at the moment and am sorry if that comes across. Does anyone have the answer to this, or the 2.1.2 installer to get me going again?
Thank you.