Tried mounting an ISO, and the status bar flashes a few times as though something is happening, however the ISO doesn't mount.
Tried opening it with windows explorer, and dopus opens instead.
I believe that in v12 it would mount to a new drive letter.
How are you mounting them? (There are several ways it can be done.)
Normally double click on the file, though as this doesn't work I tried using the context menu "Mount" option, which isn't there, so tried "OPen with --> windows explorer". These all used to work with V12, I seem to remember.
FYI I downloaded the first .reg in this link https://www.tenforums.com/tutorials/30231-add-remove-mount-context-menu-windows-10-a.html which then allows me to open the iso in a drive using windows explorer, however dopus still does not mount the iso, and if I choose "open with windows explorer" within dopus it open an explorer window with the recent files.
Try making Explorer the default handler for ISO files. Double-clicking them should mount them then.
Make sure ISO hasn’t been turned on in Opus’s VFS plugins either. That will try to open them like archives rather than actually mounting them as a real drive everything can access.
Changing the windows setting for default program to open ISOs to explorer worked, as you suggested. Might prevent some people having the same issue (and wasting your time) if it's possible for dopus to open them natively.
Thanks for your help.
I have turned off ISO in VFS plugins. Now when I try to mount any ISO file by right clicking and selecting "Mount", nothing happens. However double clicking the ISO file successfully mounts it. Why the Context Menu "Mount" doesn't work with Opus? It works in Windows Explorer however.
Right-click > Mount works OK here, and would normally do the same thing as double-clicking the .iso (when the VFS ISO plugin is off).
Maybe something is blocking the operation when performed that way (antivirus etc.), or the registry/filetype settings are damaged in some way that affects Opus but not Explorer. It's also possible the double-click and right-click options are doing different things, if an application has changed one or the other in the registry.
If double-clicking works, I would just use that, since it's easier anyway.
Thanks for your reply. I have put Opus in the Trusted Applications list and I am reasonably sure that my Antivirus is not blocking it. I have also re-associated ISO files to Windows Explorer but it has not fixed this issue. If you have more ideas to try, please let me know.