I am getting the following message 'he iPhoto Library is locked, on a locked disk, or you do not have permission to make changes to it. iPhoto can try to repair the permissions.'

Couple of things to try:

Restart your mac and try launch iPhoto again.

If that fails:

Go to your Pictures Folder and find the iPhoto Library there. Right (or Control-) Click on the icon and select 'Show Package Contents'. A finder window will open with the Library exposed.

Look there for a file called ‘iPhoto’Lock.data or similar. Drag it to the Desktop. Make no other changes. Start iPhoto. Does that help?

If not: Where is your iPhoto Library stored? If it's on an External Disk, what format is that?

Hi

I have the same problem, I'd tried everything I have create several new libraries but seems to work for a little while then just the message come up again, my library is stored in a external hd mac os extended journaled to my short storage capacity.

Is that a USB disk? Wired or Wireless connection?

Usb wd usb 2.0 wired to my imac then shared on my network. So the mackbook air connects wireless.

Do you have the disk formatted OS X Extended (journaled) with ownership set to be ignored?

OT

So the mackbook air connects wireless.

That's the problem:

See this article

http://support.apple.com/kb/TS5168

Note also comment:

“Additionally, storing the iPhoto library on a network rather than locally on your computer can also lead to poor performance or data loss.”

the disk is set to ignore ownership., i do understand of poor perfomance due to a wireless conectivity, but i least i can meke it to work then sufffered poor performance but seems that i cant pass that.

i was trying to move the iphotolock.data to de desktop but the following message come up ""the operation can't be completed becacuse you dont have permission to access "iphotolock.data". seems some how that my wifes mackbook dont have persimmion to this computer even she is set as read and wite user permission.

i had use this library on this computer before but after this message appears i have to create a new library.

These problems wiill persist and recur as long as you use a wireless connection. Poor perfomance is just one of the problems. It's just not designed for network access.

I have iPhoto 9.4.3 and iTunes 11.1.5 on my Mac mini with OS 10.8.5

My problem is similar, except that I do not see any message. I only have a handful of photos (synced from my iPhone) in my iPhoto library, but when I open the library I get this full-screen picture (and pressing Command + esc. does not do anything) and I cannot go any further.

I accessed the contents of the iPhoto library by pressing Control and clicking on the library icon. There was an item called iPhotoLock.data. I dragged it to the desktop and tried again, and this item just reappeared. I am not using wireless as far as my computer is concerned. What can I do?

Try the following:

1 - launch iPhoto with the Command+Option keys held down and rebuild the library.

2 - Run Option #4, Rebuild Database.

OT

Amazing! Rebuilding the database did the trick! Thank you very much.