Vista - Anno 1404 "save/load" problem and using "runas.exe"

Hello everyone
Recently, I'm playing Anno 1404 (also called Dawn of Discovery) in my Vista Home Basic 32bit finely until I saw the problem with the "save/load" problem. First, it saves "systematically" but, the save is corrupted to a 5kb file. Second, the game can't load the 'properlly saved' save file, and also the corrupted one also.

Few of the players had the similar problem, and someone said that making another user account works, and I tried and really worked for me. Yes, I can play this way, but all of my files and infos are saved in the Administrator account, and I don't want to switch users just to play that game

Recently I found a useful MS program, which is runas, and found how to run as another account. It asks for the account pw, and everythis was fine, but it doesn't run my game
It just closes the cmd and nothing happens. What could be this problem?
I hope Ubi gives out this fixing patch fast

Figured it out with Runasspc program (which also saves the password! )