Fatal Error when Installing DOpus

[Leo]

Please try the suggestions here:

Problems installing Opus

(This has been hidden as most of it only applied to older installers. We have since switched away from InstallShield.) This FAQ lists several solutions for dealing with common installation issues. See also: Windows Compatibility Settings / Wrong D…

(It's worth trying them all even though the error message from InstallShield may be different. The same solutions can fix more than one problem, if the InstallShield data files are corrupted in some way.)