Thank you Guido. That worked... When I went to uninstall the old installer via control panel I noticed the older versions of the Installer were listed as well., Maybe that was the issue., Anyway, I uninstalled all the older versions first and then installed the version you had just linked to. The tr...

johanc wrote:do you have administrator priviliges?

Yes sir.. I tried installing as an administrator and I got the same error. BTW.. I have my UAC in win 7 set to off.

I have the complete NL2000 4.2 Installed. Now, when I tried to add the 4.3 package individually I get a Pop up error. I am on Win 7 64 bit. FSX+ Acceleration (SP2) http://farm9.staticflickr.com/8473/8142345620_32ccb94632_z.jpg I really want to add the nl2k_V4_03_Tree_upgrade.nl2 Any help would be ap...