Hello. I have the UK version of The Witcher Enhanced Edition.Currently I cannot install the v1.5 patch (latest). The game runs ok, after some troubleshooting from my part. My operating system is Windows 7 Ultimate 64 bits.At first I had trouble with TAGES, after the first installation (which completed successfully) of the game (v1.4), the OS said it didn't recognize a certain driver, so it disabled it. That is when the problems started. I didn't try the game out after this first installation, I went directly to the v1.5 patch, and it crashed during installation, with a strange error prompt. Then I tried the game out and it crashed also while loading.Finally, after several tries, I updated the TAGES driver and applied other tips found on this forums. That is, I run everything as administrator, run the patch on compatibility mode and I used the TweakUAC to place the UAC to QUIET (it was previously disabled, right from the beginning).So now, after applying these tips, I can successfully install the game (version 1.4) and run it. Still, when I try to update (execute) to v1.5, the installation crashes, and from then on, the game also crashed when I try to play it. This time though, the crash is the typical Windows 7 error prompt, which says the program stopped working and gives the choices to look online for solutions or close the program. The details say something about ISSetup.dll under Module Failure Name or something of that nature (at first it said USER32.dll but I figure that changed once I changed the UAC settings).My OS is up to date, as are all the hardware drivers. My hardware is Intel Quad Core Q9650 processor, Asus Rampage Formula motherboard, 4GB DDR2 Corsair CM2X2048-6400C4DHX ram, Evga Nvidia GTX 275 graphics card and Seagate Barracuda 250 GB 7200.10 SATA II hard drive. Nothing is overclocked. I previously installed this game and applied the patch on this same machine but under Windows XP Pro SP3.I would greatly appreciate help in this matter as I would very much like to update this game to its latest version and apply the additional content.Best regards!