Hello shoham B,
The Compare Project Versions is a toolbar in Project 2007. First try
View > Toolbars in the menu and see if it is listed. If the toolbar
is listed, make sure you have selected it to show the toolbar.
If you have turned the toolbar on but the buttons don't function try
the steps below:
Tools > Customize > Toolbars.
In the customize dialog box, select the Commands tab.
In the Categories: list scroll to find All Commands.
Click on All Commands and in the Commands: list on the right find
ComAddInsDialog.
Drag that command to any toolbar.
Click the COM Add-Ins... toolbar button and you should see the list of
add-ins.
My installation shows the following when I select the Compare Project
Versions Utility:
C:\Program Files\Microsoft Office\Office12\COMPPRJ.DLL
Try removing and then adding the file.
I hope this helps. Let us know how you get along.
Julie
Project MVP
Visit
http://project.mvps.org/ for the FAQs and additional information
about Microsoft Project