I have a digicam - Canon PowerShot A640. It uses SD cards. I connect it to my PC using USB cable, and it shows as a camera in My Computer, inside of which there's a Removable Storage, and I can copy, move any files from it and back. I moved everything (photos and videos) from that SD card to my HDD. Today I need to move everything back to the card. When I tried to move whole folder with it, it started moving, but after a while explorer crashed, and of course move process aborted. I tried it few times, but each time it was the same result. Then I started copying files in groups, until I found that it's videos, which are making explorer crash. Those are avi files of different size (from 12 to 200 MB). I tried copying each of them, and each time I get a message - Windows Explorer has stopped working. I tried this on laptop also - same result. Both PC and Laptop are under Windows 7 Ultimate. But in my case it's x64, while on laptop - x86. Any suggestions on this?

It sounds like a nasty bug, but I'm not sure whether to think it's with Explorer or maybe the camera driver, or possibly even a codec intended to display some kind of thumbnail for the videos. Was your Explorer set to one of the "icons" views when you tried this? If so, what I can suggest as a workaround is to try to set Explorer to Details view, i.e., so thumbnails are not displayed, but only filenames and other info. If it is an issue with an attempt to generate a thumbnail this might allow you to copy the files without the crash. Some folks have reported that the creation of Thumbs.db gets in the way of copying files. There's a way to turn the generation of Thumbs.db off, which has been shown to help with some copy operations. Please let us know if using Details view gets the files copied successfully. -Noel

Nope, it didn't help. I switched to Details view in both windows, even closed the preview panel, but it still crashes. There's a thumbnail in the bottom when I select video anyway. Is there a way to copy it ti camera using cmd? Camera does not have any letters attached to it, so I guess that it's impossible. And I don't have a card-reader.

Darn. As I don't have your setup, I can't say for sure whether there could be a way to get the job done with a command line. I'd guess there will be. You could try to see what path it has like this: 1. Hold down the shift key and right-click on the folder.2. Choose Copy as Path.3. Paste into something like Notepad to see what the path to that folder looks like from Explorer's perspective. I'll be interested in what the above yields. Assuming you have a version of Windows with the group policy editor included, you could try disabling the automatic creation of Thumbs.db: To Turn off Caching of Thumbnails in Hidden thumbs.db Files · Click the Start orb · Enter gpedit.msc in the search box and hit Enter. · Expand User Configuration - Administrative Templates - Windows Components. · Click on Windows Explorer. · Right-click the entry "Turn off the caching of thumbnails in hidden thumbs.db files" and choose Edit. · Enable the setting. -Noel

Well, first advice won't work because there's no such option when I right-click on the folder inside flash card, on the Removable Storage, or on the camera in My Computer. There's also no option to open Command window here, like on other folders. I turned off Caching of Thumbnails, but it didn't work. I also turned on hidden files and folders, and disabled an option to hide System files, but there weren't any Thumbs.db in folder with videos on my PC (which also had photos that I moved back to SD card) or on flash card on camera, though there are such files in other folders with photos on my PC.

Hi, How about testing it in Clean Boot mode? In addition, please update BIOS and device drivers. You can also use the following tool to remove third party extension: ShellExView: http://www.nirsoft.net/utils/shexview.zip In the meanwhile, try the following steps to clear USB filter drivers: Modify the Registry==================== 1. Click the Start Button, type "regedit" (without quotation marks) in the Start Search box and then press ENTER. 2. Navigate to the following key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36FC9E60-C465-11CF-8056-444553540000} 3. Right click the {36FC9E60-C465-11CF-8056-444553540000} entry, choose "Export", select Desktop in the Save in box and type backup in File Name. Click Save. Please Note: The backup file is on the Desktop and named backup.reg. We can simply restore the registry by double-clicking the backup.reg file. 4. Highlight this key {36FC9E60-C465-11CF-8056-444553540000}, on the right pane, and then check if Upperfilters and Lowerfilters value are present. If so, right click on the values and select "Delete" to remove them. 5. Restart the computer Hope it helps. Vivian Xing - MSFT

Serg - Quick question - Now, when you're copying the files in question to the SD chip, is the SD chip is plugged into the camera while it's plugged into a USB port? Or is it plugged directly into a built in SD chip reader or an SD card reader that plugs in by way of a USB cable? If the chip is in the camera, I'd recommend either a built in flash card reader or one that plugs into a USB cable. If you look around on ebay, you can find one going for under $1 (USD) that'll read ANY SD card ever made - including the new SDHC chips. Now, you say the card drive doesn't have a drive letter? That's easy enough to fix. Go into Disk Managment (Right-click on Computer, select Manage, click on Disk Managment when it pops up). and find the drive without a letter. Right click on the drive in question and select "Change Drive Letter and Paths" - add a drive letter that isn't being used on any networked shares and click OK. Try it again. Let us know if that helps.

Serg - Quick question - Now, when you're copying the files in question to the SD chip, is the SD chip is plugged into the camera while it's plugged into a USB port? Or is it plugged directly into a built in SD chip reader or an SD card reader that plugs in by way of a USB cable? If the chip is in the camera, I'd recommend either a built in flash card reader or one that plugs into a USB cable. If you look around on ebay, you can find one going for under $1 (USD) that'll read ANY SD card ever made - including the new SDHC chips. Now, you say the card drive doesn't have a drive letter? That's easy enough to fix. Go into Disk Managment (Right-click on Computer, select Manage, click on Disk Managment when it pops up). and find the drive without a letter. Right click on the drive in question and select "Change Drive Letter and Paths" - add a drive letter that isn't being used on any networked shares and click OK. Try it again. Let us know if that helps. SD card is plugged into the camera, which is connected to PC by USB cable. I borrowed that card and it had some files on it, so I copied them on my PC, and after I used it for my needs, I decided to copy them back. I don't think I'll do that again in close future. So buying a card reader now isn't necessary. Actually I copied those files onto a USB flash and gave them to the guy that borrowed me SD card, but I'm still curious to know what's the problem. I can still do what you ask, because the same things happens with my smaller SD card (2 GB instead of his 4 GB SDHC), and I do still have those video files. I use SD cards only for the camera, and I never before needed to copy anything on them, only from. And that never caused any problems. And about Disk Management - it was the first thing I tried. When the camera is plugged in - there's no that card in Disk Management. It's totally not there. So I can't add a letter to it.

Serg - Thought as much. I think the problem here may be due to the fact the SD chip is plugged into the camera. There's an extra layer of hardware there (the camera) that may have something to do with those files NOT being allowed onto the chip once they've been copied off. By having an SDHC card reader between the chip and the computer, that eliminates any coding in the camera's firmware that prevents that kind of operation. Now... You said "copied" - but that operation usually leaves the original file in it's place - hence the name COPY. When you MOVE something, Windows makes a copy of the original file and then once it's done, it deletes the source file on the SD chip. If you only copied them then they should still be there. If you moved them - that's another story entirely. I'd still recommend buying a cheap SDHC reader. As I said before, they're about $1 USD all day long on ebay. If for no other reason than to eliminate any possible issues with the camera. That should also fix the issue with the chip getting assigned a drive letter. Windows will assign one for the reader automatically.