I have PSE8 and when I click on Organiser it thinks for a while and then nothing.
I have tried deactivating and reloading with no luck. I have tried accessing via Edit also with no luck.
There have been a number of proposed solutions on the forums whcih I have also tried.
Running Windows 7
After not working and trying to access via edit I reloaded PSE8 with and without deactivating.
In the forums there was a comment about renaming the file yet I could not find out where to do that.
I'm not very technically minded which might not help.
Hold down your Ctrl+Shift keys when clicking on the icon to start the Organizer, and keep the keys held down until the Catalog Manager window opens. Then create a new catalog, giving it a completely different name, like
Let us know if you can then launch the Organizer.