Thank you, the videos answer some of my questions and provide new information.
If a crash dump is created for the crash in the second video, please zip and email it to me (leo@gpsoft.com.au). That might reveal something important.
I have, I think, re-created the folders (but not the files in them, which I can't see) exactly as in your videos. I've attached a zip of that for reference, and as a starting point for anyone who wants to try similar things, to save time:
Testing.zip (60.8 KB)
I have done similar tests so what's in your video several times, without reproducing the problem:
Questions:
These questions should be answered by anyone who wants to help, so we can work out which aspects are important and which don't matter. The video and opw62's earlier replies already answer some of these questions, which I'll note below. We need answers to all of them from everyone who wants to help.
The first of these were already in the thread but I am reproducing them so everything is in one place, and elaborating on them as much as I can.
I will repeat the questions on their own at the end, without the commentary, so they are all together and easy to go through one-by-one.
[ol][li]If you open two separate windows showing the same folder, then delete the sub-folder from one of them, does the file display in both windows update? Or does only the window where you deleted the folder update, or only the other one, or is it sometimes either or both at random?
opw62 mentioned earlier that both folder trees failed to update update, but in the video it looks like one updates OK and the problem is only in the tree where the deletion was performed.
Maybe it's both sometimes and only one at other times?
When it happens, is it always the tree where the delete was performed (and maybe the other tree as well sometimes)?
What do other people see?
Is there a pattern to when it happens in both? For example, does it only happen in the other tree if it also happens to have the deleted folder selected, and never when another folder is selected?
[/li]
[li]Does this happen in all folders, or only in a particular place in the tree? (e.g. Does it only happen on a particular drive, or only below the My Documents branch, or similar?)
Try other locations in the tree to see if the same happens there. Try different drives.
opw62's video shows it happening at the roof of what looks like a generic secondary drive. That's useful information. Trying on the C:\ drive may also be useful, to rule out anything particular about the drive (filesystem, speed, etc.).
For everyone else, please say where you see it happening, and try in different places to see if it matters. I gave the example of trying below /desktopdir but C:\ is another example if you can't use /desktopdir for some reason. (Just be careful not to delete anything important!)
[/li]
[li]What if you also open an Explorer window, then delete in Opus; does Explorer notice the change?
opw62's earlier reply: "when I have Opus foldertree open and on top Windows Explorer and delete a folder in Explorer, then Opus is updated immediately"
But that wasn't what I asked. The deletion should be done in Opus. The question is whether Explorer sees the folder being deleted when you delete it from Opus.
[/li]
[li]New question: Does it only happen with lots of nested folders being delete?
opw62's video shows it happening with lots of nested folders being deleted, so I made sure I did the same thing when trying to reproduce the issue. Is doing this important to reproduce the problem, or does it also happen with empty folders, and/or where there's just one or two things in a folder?
[/li]
[li]New question: What files are in the folders being deleted?
opw62's video shows a few MB of files being deleted, from the progress dialog, but I can't see what they are. The file types are of particular interest. For example, if there are .exe files, archives or movie files, they can cause particular behaviours which may be relevant. I'd like to make my test as similar as possible by adding similar files to the folders I am deleting, in case it is important.
I have a hunch this is important, from an idea about what may be going wrong, but it is only a guess so far. I might be wrong but please do not ignore this question in particular..
[/li]
[li]New question: What does the file display look like? In particular, is it in flat-view mode, or doing anything which would cause sub-folders to be inspected in the background? (e.g. Calculating folder sizes automatically.)
The video shows the folder trees but crops out everything else. As much detail as possible is always useful.
[/li]
[li]New question: Are you deleting with or without the recycle bin?
opw62's video shows the recycle bin being used. Is it the same for everyone else?[/li][/ol]
The questions on their own, so they are easy to go through one-by-one:
[ol][li]If you open two separate windows showing the same folder, then delete the sub-folder from one of them, does the file display in both windows update? Or does only the window where you deleted the folder update, or only the other one, or is it sometimes either or both at random?
[/li]
[li]Does this happen in all folders, or only in a particular place in the tree? (e.g. Does it only happen on a particular drive, or only below the My Documents branch, or similar?)
[/li]
[li]What if you also open an Explorer window, then delete in Opus; does Explorer notice the change?
[/li]
[li]Does it only happen with lots of nested folders being delete?
[/li]
[li]Important: What files are in the folders being deleted?
[/li]
[li]What does the file display look like? In particular, is it in flat-view mode, or doing anything which would cause sub-folders to be inspected in the background? (e.g. Calculating folder sizes automatically.)
[/li]
[li]Are you deleting with or without the recycle bin?[/li][/ol]