Hey Roman, It sounds like something might not have installed correctly or some sort of general software error occurred. I'd recommend the following steps: 1) Clean your temp folder by going to start -> all programs -> accessories -> system tools -> disk cleanup Make sure that "temporary internet files" is checked and run the utility. 2) Make sure you have full administrator rights in Windows or that you are on the profile that is the main administrator account. 3) Uninstall the mouse software through programs & features / add-remove programs in your control panel 4) Open the Start menu and in the search bar type %appdata% - this will open a folder. Find the SteelSeries folder and delete it. Note: if you have a Shift keyboard this step will delete your custom mods. If this is unacceptable please omit this step and detail this in your reply. 5) Access your device manager in control panel (classic view) -> mouse -> hardware tab -> hid compliant mouse (there should be 2, choose one) -> highlight -> properties -> change settings -> driver tab, -> uninstall -> repeat process (if possible) for other HID compliant mouse you did not select -> restart computer (mouse unplugged) 6) Once again access your administrator account and replug the mouse 7) Download the software from our website: http://www.steelseries.com/support/downloads Please do not rely on a previous download as we occasionally may release a new version with a small patch without updating the actual software version. Also, save the installer instead of running it from your browser (save option, not run option). 8) Right click the installer file and click 'properties' -> compatibility tab: check “run in compatibility mode for:” check “run this program as administrator -> security tab: click “advanced” and make sure that all of your profiles have “full control” under permission 9) Hit apply and run the installer. 10) Go into the install directory and right click on WoWMGUI.exe, WoWMHID.exe and WoWMTray.exe, go to Properties, and then the Compatibility tab. Set all three applications to "run as administrator" 11) Make sure that you are not importing any profiles as the profile itself might be bugged or incompatible depending on software versions. Please let me know if that doesn't solve the error. Thanks for your effort and patience. Regards, Mike SteelSeries Support
