What does the yellow triangle with an exclion point mean when trying to email a photo from iPhoto?amat

This indicates a disconnect between the Thumbnail and the original

this can be caused by two things

1 - User action deleting items from inside the iPhoto library - can be directly - can be from the All images list (never delete from there) - can be from running cleanup software like MacKeeer, CleanMac2 or other dangerous, defective software that improperly deletes or changes things in the iPhoto library - if you have done any of these things you must restore your backup from before you did them and damaged your iPhoto library - and I recommend getting rid of any "clean up software" ASAP (although being essentially MalWear it is not easy)

2 - corruption of the iPhoto library - If it is not #1 then Back up your iPhoto library, Depress and hold the option (alt) and command keys and launch iPhoto - rebuild your database

LN

With the amount of information you've provided it's impossible to offer a solution. We can't see your computer so we need to know the details of your problem and setup, i.e.:

• what version of iPhoto are you using?
• what system version are you running?
• are you using iPhoto or Mail as your email client?
• where are you seeing this warning sign? Can you post a screenshot of the window?
• what fixes have you tried?
• where is your library located?
• did you apply any updates or upgrades just prior to the problem occurring?
• are you running a "managed" or "referenced" library?

• what type of Mac?
• how much free space on your boot drive?