I just purchased TI v11 retail and installed it on my Vista 32 machine without any problem. Afterward, I noticed that my computer screen had developed a flicker about every 30 seconds. I registered my product online and noticed there was an update to v11.8053, so thinking that might solve the little flickering problem, I downloaded it and tried to install it, but got a popup window that said, "Setup cannot copy the file tdrpman_2k.sys. Ensure the location below is correct, or change it and insert 'Acronis TryDecide and Restore Points Installation Disk' in the drive you specify." I chose to Cancel since I didn't know where to find the file it was looking for. Directions said it was fine to install over the previous version, but after reading posts here I thought I'd try uninstalling my previous version and reinstalling the updated version. But I got the same popup window message. I eventually found the tdrpman.sys file located in C:\Windows\System32\drivers, so I tried to install again and point to that location, but it wouldn't accept that. Then I tried to just reinstall the previous version 11 from my retail CD, but got the same thing. So now my computer still has the Secure Zone occupying a hidden partition on my hard drive, but I have no functional software. I've submitted a support ticket #1220391, but haven't heard anything back on it yet. I've searched this forum and any other place on the internet about tdrpman_2k.sys, and have only been able to find out that this file would be the Acronis Try&Decide and Restore Points Volume Filter driver. Following another reboot of my system, the tdrpman_2k.sys file is no longer anywhere on my computer. I have no idea what has happened. Can anyone help me to either get the program working... or get it totally removed from my computer, including the hidden partition on my hard drive?