Why has the transition changed for the Classic theme

Question

Some years ago I asked how to have no transitions on a slideshow and I was told to use the Classic theme. This had Transition: None. I used this to convert many 4:3 photos to 16:9 HD for display on TV, one by one.
Now, when doing the same, the last second had the Dissolve feature even though it had Transition: None! Some how it has now changed to Transition: Dissolve and I can't find a way to change it back.
I'm using iPhoto 11 v 9.2.3, created 25/8/10 6.06am, modified 3/4/12 1.18am, on OS X 10.6.8.
My earliest backup (Time Machine) was 14/9/12 & has exactly the same iPhoto details. The modified date (3/4/12) was when I downloaded the 9.2.3 version. One photo previously modified is dated 27/11/12. Some how the transition changed since I used it even though iPhoto wasn't changed since a date 7 months earlier? I've reverted back to the 14/9/12 backup and it shows Transition: Dissolve even though that version was used for the photo and had None at the time!!!
I've tried modifying/deleting various iPhoto Plist files; iPhoto just modifies/re-creats them. I've even re-installed iPhoto from the original iLife disc onto the 14/9/12 system, but when I tried to use it it told me I have to get an upgrade. Upgraded to v 9.1 and upon opening it said it couldn't use the current photo storage space because it's a newer version (something like that) and asked if I wanted to Cancel or Create a new one and only gave Cancel as an option! Updating again creates v 9.2.3 (date: Today) and it has Transition: Dissolve.
I now believe there must be a file somewhere that contains this setting but, where and why wasn't it reset after restoring from backup?
Any help would be much appreciated.

Answer 1

I cannot check with your version any longer. But where have you checked the "Transition" setting?
Check in both places for the slideshow settings - the "All Slides" tab, and the "this Slide"tab for individual slides.
(This screenshot is from version 9.6 -sorry)
The properties of your slideshows will be stored in the iPhoto library. Have you run the First aid Tools to repair the permissions and the library?
Do the following:
To launch the "First Aid Tools" hold down the options-command keys ⌥⌘ while double clicking your iPhoto Library.
Keep the keys held down firmly until the First Aid panel appears.
Then select  "Repair database" from the First Aid pane.
The may take a while for a large library.
Repeat with "Repair Permissions".