There is a problem with the current version of Empires Mod where any fresh install of the mod will fail to run, instead producing the error message similar to the following: MountAppFilesystem() failed: SteamMountAppFilesystem(17740,4294967295,0x19f5fc0 c) failed with error 5: No CS online with App 17741 Ver 0. We believe this problem originates from a conflict between the version of the Source engine we are using and the SteamPipe content distribution format that all Steam content now uses and has been converted to. We are working with Valve to rectify this problem as soon as possible. A workaround is available. Please follow these steps: Install the Source SDK Base 2007. Click to install. If you have already installed it, this does the same as the second step. Run the Source SDK Base 2007 once by clicking here. Open up Steam and go to your Library. Select "Tools" instead of "All Games" at the top of your game list. Scroll down towards "Source SDK Base 2007", which should be white (because it is installed). Right-click on "Source SDK Base 2007" and select "Properties". A new window will open. Click on the button "Set Launch Options...". A new window will open with a text box. In the text box, place the following text: -game ..\empires\empires Select "OK" to save your changes, and then select "Close" to close the properties window. Double-click on "Source SDK Base 2007". Empires Mod should now start as expected. If this workaround does not work for you, please post in our Support Forums. Tags: Empires
