The application Finder.app can't be opened.

Hello S. Crooks,
Just wondering: prior to the problem with 10.6, had you considered having a backup drive with 10.5 in your Mac Pro?

Just citing my own example: I have drives in Bay #1 and Bay #2 running 10.5. I plan (eventually) to install 10.6 on one drive - to permit myself time to get used to it and while waiting for 10.6 to "mature" past its current problems. Once I judge 10.6 to be fully functional and bug free, I'll then install it on the other drive so I'll always have two boot drives (essentially identical) as "insurance."

I admit to going overboard on this but I still have a drive running 10.4 as well. - When I want to use some older apps on that drive, I just bring it out of storage and swap it in place of one of the drives running 10.5.

Bays #3 and #4 are configured as mirrored RAID - which I use to store thousands of photos and some video.

I needed to update Xcode and it seems to have replaced my Finder and Software Update by X86-64 version they can not run on my MacBook with Snow Leopard : how can I restore it ?

Finally I see 3 solutions for me :
- Restore my last saving from Time Machine
- Reinstall my Snow Leopard because it was allways slowing recently
- Install Ubuntu Karmic because I need a lot virtualization : the only problem, I don't know if MacOS X (10.6.2) can be virtualized (however, may be I don't need it anylonger).
No help on Apple forum ?

I can lauch saving of Time Machine but I can't enter in Time Machine in order to lauch restore.
There is no error message just very long turning waiting sign ; the trouble for my system seems big ; I will wait to the timeout (if any) for entering Time machine and if does not work I will reinstall Snow Leopard and then launch restore from Time Machine : an occasion to verify if it works.
By the way, can anybody give some links about 64 bit architecture for Apple models ?

Time Machine can't work without Finder.
However, it is restored and it works again ; I just put the DVD of Snow Leopard, erased the disk using the utilities, reinstalled Snow Leopard and then restored with my last Time Machine saving.
However the informations about the MacBook are reporting : 64 bit kernel and extension : no.
One can say that I used this forum as blog for a bug coming from Xcode 64bit misinstallation.

i got the same question too, crashed for unknown reasons (with my external HD connected), not often but really bother me. . first, finder can't not display files in external HD, then Beachball, then can't relaunch finder, then have to force to turn it off by holding on power button. hope apple get this problem solved soon. tks!

I'm having the same problem, strange as I've been running just fine for a couple of months. The only thing that has changed recently is that I got back from a trip and had different wireless connection settings. Just opened a ticket with Apple Expert. Hopefully I can get some updates.

Yup, same problem over here:
while browsing my network shares (on qnap) finder stops working.
manually restarting results in the following error:

# osascript -e 'tell application "Finder" to restart'
29:36: execution error: An error of type -10810 has occurred. (-10810)

Hello Gaston,
The best that you can do right now is to call Apple Support and get them to open a service ticket (aka "Case number") for you. Tell them you're getting error 10810.

Tell them there's a thread on Apple Support Discussions that started back on August 30, 2009 and that there are other threads which report the same problem (error 10810). You might mention the name of this thread if they ask about it.

Good luck.

I've been having this issue as well. Quite annoying. I guess no one has posted here in a while but it's the first thing that comes up when searching the error.

I've had this happen a couple of times and it is usually associated with waking from sleep.

I have an external USB drive attached to this computer, and every other day or so, when I double click on the desktop icon for my external hard drive, a blank window opens up and the Finder hangs. When I try to re-launch the Finder, I get the error "The application Finder.app can't be opened. -10810."

My guess is that this is being caused when the computer sleeps, and that somehow the drive is not being properly re-mounted upon wake. I have gone into the energy saver settings and set sleep to 'never'. So far no more -10810 errors, although I suppose it is only a matter of time before someone closes the lid to the laptop, forcing it to go to sleep.

I just read 28 pages of other people experiencing the same problem, but can find no official comment anywhere from Apple. It is so shameful to see Apple taking vital system issues about as seriously as Microsoft does with their system issues.

When a problem like this exists, I should be able to search the Apple website for "10810" and find something from APPLE (not just their users), outlining their understanding of the problem thus far, assuring me that they are aware of the issue and are working on it, and offering some work-around solutions for me to try in the meantime.

I would wait patiently if they would just do this. (And I would have something tangible to show my friend, the owner of this computer, explaining why he is having this problem.)

In the meantime, I have egg on my face for convincing my friend to allow me to upgrade his laptop from 10.4 to 10.6. Everything was working fine before, and now he is dealing with this issue every other day. He now blames me for 'screwing up' his computer.

Workaround from: http://utvv.blogspot.com/2010/01/how-to-fix-application-finder-cant-be.html

1. Open terminal (Use Spotlight to launch it if not in the dock)
2. Run command: '/System/Library/CoreServices/Finder.app/Contents/MacOS/Finder &' (without quotes)
3. Enjoy

I hope this works 🙂

Thanks for the tip - I'll try it next time I see this bug.

Tried that to no avail. I still think this has to do with network behavior. I just had this pop up again after reading a large PDF file from a drive attached to my Airport Extreme Base Station. I opened system preferences, made a change to my network settings under advanced, set them back, and hit apply. The network connection reconnected and after that I could open the Finder and the files on my attached HD..