After installing space manager using a user who is in the local administrator group, launching space manager GUI 8.0.1 fails with message "Class not registered".
explorer.ddl is not registered for the user
Close Space Manager
Command prompt: cd <Space Manager installation folder> (e.g. “cd C:\Program Files\Quest Software\Space Manager 8.0”)
install Microsoft.Net Framework 4.
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe Explorer.dll
Re-open Space Manager
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