The plugin_load command is broken on the newest versions of the game currently.

You can fix it either by installing an old version of the game, such as Source Unpack Version 2.5 from https://sourceunpack.gameabusefastcomplete.com/ where the command works just fine.

or

Creating a file called speedrun_demorecord-2013.vdf in portal/addons (you may need to create the addons folder yourself) and adding the following to the file (assuming your speedrun_demorecord-2013.dll file is located in the portal folder). This option may not work with other plugins though.

"Plugin"

{

"file" "speedrun_demorecord-2013"

}

good job on the pb