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iteachmac, The Duke!
Category: Mac
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Experience:  Mac help ,music midi expert, logic pro recording ,electrical installation ,ilife & all mac computing
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Hi! I had a large keynote presentation file that took a

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Hi! I had a large keynote presentation file that took a long time to write and animate. But once I closed it, I could not open it again. The message it would give after trying to open for a while is Can't open the file "______.key". So… I stayed worked 12 hours straight through the night to re-do the entire presentation for my lectures the following day. Now, after I eventually worked up the courage to close this new document, it fails to open again! I really don't want to re-do it again, again for future lectures! I am considering pulling my hair out but noticed that it seems to be falling out anyway… :-) Can you please help. If possible I'd like an expert to take the file and fix it for me if required, but it is a large file (4.2GB).

iteachmac :

Welcome ,I will give a full and clear answer to your question, please make sure to reply to any questions I have. They may be essential to my reply.


iteachmac :

Hi , Please can you try this :


iteachmac :

Unable to Open “docname” because it isn’t a valid Keynote document


  1. FInd your document in the Finder.

  2. Rename - Add .zip to the name of the file name*

  3. Double click that file to expand.

  4. Open the resulting file that was made by the zip.

*make sure you don’t replace .key please add the .zip at the end of the file name , so your filename is This should also work if you dont have a file extension at all , i.e just add both file tags.


iteachmac :

Note : a Zip file is a compressed file type that contains the document you need.


iteachmac :

This article may uncover the problem were having here worth a read.


iteachmac :

I hope this helps.

Thanks ,



iteachmac :

Please let me know if this helps you .



It seemed to work for the first time. However when I closed the document again, the same problem happened. Before closing it however, I copied it in 3 parts in 3 different presentations. It seems that section 2 and 3 open, but section 1 doesn't, and the entire to the presentation doesn't either (again)… So could there be a problem isolated in the first 1/3 of the document?


iteachmac :

Hi ,


iteachmac :

Ok some progress


iteachmac :

Please can we make a check on the mac hd :


iteachmac :

Lets run though some basic repair checks .

Repair Mac HD , Check Permissions with the OSX Startup volume.

To check for disk errors and possibly fix issues with the Mac HD volume and other Partitions .

Please run a Mac HD drive repair ,
and Repair Permissions of the Mac HD startup volume .

Carry out repairs twice and then verify on both Mac HD and other partitions if any , also do same for your external HDD's if you have any , in turn .

Review this video to become familiar with the below procedure ..

For Permissions , external drives , time machine and memory sticks , you can Repair without booting to the Mac OSX startup disk :
Open Disk Utilities from the Applications/Utilities folder.

Disk Utility

For Permissions , external drives , time machine and memory sticks , you can Repair without booting to the Mac OSX startup disk :
Open Disk Utilities from the Applications/Utilities folder.

1 Start from your Mac OS X Install disc: Insert the installation disc, then restart the computer while holding the C key.

2 When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu.
(In Mac OS X 10.4 or later, you must select your language first.)?

Important:- Do not click Continue in the first screen of the Installer.
If you do, you must restart from the disc again to access Disk Utility.

3 Click the First Aid tab.

4 Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.

5 Choose your Mac OS X volume.

6 Click Repair. Disk Utility checks and repairs the disk.

If errors are found please run the check twice .

Report any errors in displayed RED to me .

Tip:- Always start up your computer from an Install or Restore disc when using Disk Utility to verify or repair your startup volume.
**Perform Disk permission repairs while Booted to your Mac HD as normal**.

Please run repairs on all your Mac HD partitions and disks.
Choose in turn the drive name from the left hand list , and use repair .

Run repairs twice if RED errors where found , check to see if they are now cleared.

Using the Repair Privileges Utility

For Mac OS X 10.2 or later, open Disk Utility found in the Applications/Utilities folder.

Select your Mac OS X startup volume in the column on the left of the Disk Utility window, then click the First Aid tab.

Click the Repair Disk Permissions button.

Please wait while the Mac HD is checked.

If errors are found please run the check twice .

Report any errors displayed in RED to me .


Permissions Defined
Mac OS X incorporates a subsystem based on a UNIX-style operating system that uses permissions in the file system.
Every file and folder on your hard disk has an associated set of permissions that determines who can read, write to, or execute it.

Now run some tests with your software and see if there's a difference ?


You can also try this more simple step to try to correct issues :-

Turn off the Mac .

Power on the Mac .

Hold shift on the keyboard using a USB keyboard , while powering on the Mac and booting , boot to safe mode.

Once booted to safe mode , restart and boot as normal .

Full details here :-

This may fix minor issues but it is best to run a Full Mac HD repair from the OSX DVD installer disk , use the OSX disk that goes with your current OSX install ..

I hope this helps .

if you still have issues or are unsure please let me know .


iteachmac :

Please can you try saving as other formats to see if this works . :


iteachmac :

such as power point save as see video .


iteachmac :



iteachmac :

If using later versions of keynote with Lion , Please use export from the file menu , rather than save as..


iteachmac :

And yes in reply , there could be a missing or corrupt file in use for the no1 presentation.


iteachmac :

Perhaps a permissions issue with a used file.


iteachmac :

for files used within the project , please try fixing permissions using this tool : and then re add to the project as needed.


iteachmac :

We need Admin "Read" and "Write" permissions , as long as your user account is an admin account , normally there is no need to add your user by name for Read Write etc .

Permissions problems can be fixed faster with a drag and drop tool , **see below** .

If you bring in data file JPG , MP3 etc , i.e user files not used by the system at a deep level , Other files copied from other computers or via USB sticks etc can sometimes have problems with permissions.

Here is the tool to fix them , see guide for use :-


iteachmac :



iteachmac :

more export options :


iteachmac :

Key note exporting options for Quicktime . " A movie".

Once the Keynote is setup and ready for export etc.

Go to the file menu , Export option or Share menu export in some newer versions of keynote for options as below .

Select Recorded timing for user defined slide timings or use Fixed timing if you want to have a new slide show speed set for each slide etc .
And set your slide durations as required etc .

Repeat set to none .

Then choose custom for formats .

Video set to full size .

Then hit settings , set the video to use H.264 , 24 frames or 29.97 frames per second . key frames auto . data rate set to restrict to 2500 kbits second .
Optimised for download on .

Set Encoder settings to best .

Then hit OK .

Then see the Audio settings ,

Select Audio: Mix audio .

Then hit Audio settings .

Choose : AAC show advanced settings , set stereo as needed : 44.1khz . Qualtiy best , constant bit rate 320kbps .

Then hit ok .

Then click next .

Name your file ,choose a location to save the file as needed , and hit Export .

A video file should be exported in H.264 video with AAC audio .

Does this work ok ?



Thank you for your very detailed response! I will have to wait till I get some time to try all of this. As soon as I get to it I will reply to let you know how it goes...

iteachmac and 2 other Mac Specialists are ready to help you
Ok thanks . :D