Iphoto hangs (20 hours) when upgrading from 6 to 11 when writing new library data (Lion 10.7.4) - Can't rebuild because I need to print a finished book - can anyone help?

Question

I startet by having iphoto 6, and the library update did not finish up.
Tried to uninstall iphoto 6 and then install '11 again.
I have back up my library on external.
I have tried to download the tool for preparing an old iphoto library, to see if that helped but no. It is also for version 5 and earlier.
When I try to open 11, it says it needs to upgrade library - I click upgrade - it checks the old library files, creates the new, and I can now see my old album names and so on, but then it hangs (I tried to let it hang for 20 hours now, because it does not say that the program don't answer, it is as if it is still working.
I believe I have around 6-7.000 pictures, but cleaned it recently, emptied the trash (and has also emptied the general trash and downloaded the latest version of Lion, 10.7.4 - even if I had it anyways)
I just bought '11 because I had trouble printing a book I just finished for my weeding in 2 weeks, so I am really keen on getting my library back in full style asap, even if I have to get an older version of iphoto..

Answer 1

Try this:  launch iPhoto with the Option key held down and create a new, test library.  Import some photos and check to see if the same problem persists. If you can create and run a new library then your current library is the culprit.
In that case make a temporary, backup copy (select the library and type Command+D) and  apply the two fixes below in order as needed:
Fix #1
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Since only one option can be run at a time start with Option #1, followed by #3 and then #4.
Fix #2
Using iPhoto Library Manager  to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option
In the next  window name the new library and select the location you want it to be placed.
Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments but not books, calendars or slideshows. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
OT