Use this Installer for those have trouble downloading the Full CLient try this split client installer, put all this 6 parts in 1 folder Extract inside the folder to install the game.
About Vista issue:
Microsoft implemented User Account Control (UAC) on vista, which prohibits program to modify files in "program files" without administrator privilege(most likely only applies to create/delete file).
What can be done as a player?
1. Don't install RAN HARDCORE in "Program Files"; Install in other places such C:/RAN HARDCORE
2. Disable UAC. (User Account Control)
3. Run patcher in Administrator(Microsoft don't like this).
4. Don't use Vista.
Thor Patcher now requires run in Administrator privilege (although I hate this, but that's the best choice out there).
If the system doesn't meet the requirements of the game, the game will either not run at all or give a less-than
desirable performance. To ensure a smooth gaming experience, we recommend that you meet the following settings:
System
Minimum Requirements
Recommended System
OS
Windows: XP / Vista / 7
Windows XP / Vista / 7
CPU
Pentium 4 1.8 GHz or above
Dual Core 2.8 GHz or above
Memory
1GB or above
2GB or above
Graphics Card
Nvidia - GeForce 6600 GS or ATI - Radeon 9600 SE or above
Nvidia - GeForce 6600 GT or ATI - Radeon 9600 Pro or above
Hard Drive
1.5 GB Space
4 GB Space
Direct X
DirectX 9.0c or above
DirectX 9.0c or above
Driver Updates:
Download the most current version of the most current driver for your graphics card.
Keep in mind there may be different versions of the driver depending on your OS.