While trying to install Office 2016 I was getting Error 30175-4 (19) on launch. Office 2010 had been installed on this computer but was uninstalled. After browsing for about 30 minutes I found this thread at the Microsoft Forums that basically said to delete this keys from the registry.
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{2112AB0A-C86A-4FFE-A368-0DE96E47012E}\
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{491E922F-5643-4AF4-A7EB-4E7A138D8174}\
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{7B0DB17D-9CD2-4A93-9733-46CC89022E7C}\
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{A302545D-DEFF-464B-ABE8-61C8648D939B}\
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{A990AE9F-A03B-4E80-94BC-9912D7504104}\
Delete those keys, reboot, and you should be back in business!