It comes up with **Access is denied,unable to create directory** no matter hat aircraft or mission it is.I use winzip for gtr evolution and have no problem at all extracting files.
As Alex says, you need to unzip the files before you place them into the sim. Trying to unzip directly into the sim can cause you all sorts of problem.
Go to your desktop, create a new folder and then choose this as your destination folder. Once the file has been unzipped, you can cut and paste your download into the sim. Also as a rule there will be installation instructions within the zip.
Lastly, what zip program are you using. If it is Winzip, may I suggest
WinRar I have never had a problem with this program. It is a lot easier to us than Winzip (my opinion only) and it is free.
Matt
"A bit of a pickle" - British translation: A catastrophically bad situation with potentially fatal consequences.
PETA

People Eating Tasty Animals.
B1 (Cat C) licenced engineer, Boeing 737NG 600/700/800/900 Airbus A318/19/20/21 and Dash8 Q-400
1. Captain, if the problem is not entered into the technical logbook.........then the aircraft does not have a problem.
2. And, if you have time to write the fault on a napkin and attach to it to the yoke.........you have time to write it in the tech log....see point 1.