During ODM installation, the executing script "Odminstall" queries the Windows Registry and receives a false positive for Attunity Server 4.8.2. It then proceeds to take a backup of the system configuration. Since the Attunity Server is already uninstalled this task fails, and eventually the upgrade process fails.
Attunity Server 4.8.2 uninstaller does not properly clean up the Windows Registry, leaving behind an entry that the OdmInstall script uses to confirm the presence of that release.
Resolving the problem
Manually delete the registry entries from this path:
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