I have had an infuriating couple of days arguing with a vendor who denied that their application had crashed my test system. I placed two calls on the help area but refused that the two issues were connected even though they happened exactly at the time of installation.
We have since proved that the installation had deleted a couple of DLL files from an application folder, we replaced these files from a previous installation from my Dev server and the whole thing sprung into life. This, as you can imagine, was a very arduous process but it worked.
Does anybody know of a piece of software that will allow me to compare one folder/ subfolders with another folder set, check content for content and notify us of any differences?
The reason I want to do this is that I am very very worried about doing this on my live environment if it is going to overwrite data and files. I am therefore going to do the installation in a virtual environment and run it and then do this comparison exercise and notate it in case I come across the problem during a live installation and can reconstruct the solution.
Any ideas? 
