Seems that I can't open any Control Panel items from windows shell. There is no error message. When I try to open Control Panel from DO, I get a error message that just says "Unspecified error". (I had the same problem with DO 9.5.some.something).
Preferences..Launching Opus..Explorer Replacement
Setting:/ Shell:/ Opus:
Don't replace.. / OK/ "Unspecified error"
Replace Explorer for all file system folders (recommended) / Nothing/ "Unspecified error"
Replace Explorer for all folders / Nothing/ "Unspecified error"
Replace Explorer for all but the following folders:(CP) / Nothing / "Unspecified error"
Perhaps I have messed something up in the windows registry at some point of time. Any ideas?
Make sure Compatibility Mode isn't turned on for Opus. This guide explains how to check.
If that doesn't help, try backing up your configuration (Settings -> Backup & Restore) and then uninstalling Opus. Does Control Panel work then? If so, try reinstalling Opus.
It was stated that Control Panel can't be opened from DO. Can it be opened from the Start Menu? How might one open Control Panel from DO anyway?
I don't really know what I'm talking about here, but I seem to vaguely recall some Opus interface to Control Panel that was available in XP not being available in Windows 7. Could this be relevant?
Opus shouldn't be running as administrator. Make sure it isn't (details in the thing Jon linked to) as that's something that could cause what you're seeing.
Edit: A quick way to check is to try making a folder below C:\Program Files. If you don't get a UAC prompt and it succeeds in creating the folder, then Opus is running as administrator (or UAC is turned off).
I can run any other programs from within Opus just fine. Control Panel issue is systemwide. Issue is only present when DO is installed and Explorer Replacement -setting is set to any other than "Don't replace explorer".
No difference when anti-virus etc turned off. (DO is whitelisted anyway).
This is a long shot but try double-clicking the Opus_SetDllDirectory_Disable.reg in the attached zip, then restarting Opus.
Opus_SetDllDirectory.zip (681 Bytes) Important: After making the registry change, fully exit Opus and then restart it. (Don't just close all the Opus windows. Exit it completely as described in the linked post. If in doubt, reboot after applying the registry file.)
If it doesn't help, do the same with the other .reg file in the zip to go back to normal. (The normal mode is more secure, but causes problems for some shell extensions.)
Could you post a screenshot of the "Unspecified Error" message, in case the style of message box indicates anything? (e.g. that it's coming from Opus itself or from another component.)
You can attach screenshots by using the "Full Editor" to reply. (Don't use Quick Reply.) Just under the place where you write your post is a thing to let you upload files.
Also, if you're familiar with Process Monitor, it might be worth using that to see which files or registry settings are accessed leading up to the failure. That may indicate an avenue to investigate. But if you're not familiar with Process Monitor then it can be difficult to sift through the data to work out the useful parts from the noise.
