Sometimes the game is looking in the wrong place. Ensure the file exists in your game's directory: ...\SteamApps\common\[Game Name]\[Game Folder]\materials\console\
It seems you are looking for information or a file named "startup-loading.vtf"
If a mod like Synergy or GMod 9 crashes because of this, try verifying your game files on Steam or ensuring the mod is installed on the same drive as the base game ( Half-Life 2 ). The Ghost in the Console