Sorry to hear about your shadow folder issue. We recommend during an upgrade with Shadow Folders configured:
1) The .NET permissions change in some versions. In some cases, you may need to set permissions on your Shadow Folders to allow the VaultShadowFolderAppPool to have read/write access.
2) If you would like to backup the entries you have for your shadow folders, you can backup the Vault Shadow Folder web.config found in vaultservice/vaultshadowfolder/web.config.
Do you have a backup? Have you reconfigured them yet? If you still need some help, please email
support@sourcegear.com and we can assist you.
Thanks,
Tonya