Fatal Error When Installing App

[Yuu]

I tried installing an application on my board and I keep getting an error. I wasn't getting this error up until last night, and I'm not sure why this is happening because it was working perfectly fine less than 2 days ago.

This is the error message I'm receiving: Fatal error: Class 'skin_global_121' not found in /home/lakevalo/public_html/admin/sources/classes/output/publicOutput.php(3846) : eval()'d code on line 3

I already tried Googling for an answer, but everything I found and tried didn't make a difference.
I checked the publicOutput.php file and this is what's around line 3846:

protected function _getSkinHooks( $name, $classname, $id )
{
	/* Hooks: Are we overloading this class? */
	$hooksCache	= ipsRegistry::cache()->getCache('hooks');
	
	if( isset($hooksCache['skinHooks'][ $name ]) && is_array($hooksCache['skinHooks'][ $name ]) && count($hooksCache['skinHooks'][ $name ]) )
	{
		foreach( $hooksCache['skinHooks'][ $name ] as $classOverloader )
		{
			if( is_file( IPS_HOOKS_PATH . $classOverloader['filename'] ) )
			{
				if( ! class_exists( $classOverloader['className'] ) )
				{
					/* Hooks: Do we have the hook file? */
					$thisContents = file_get_contents( IPS_HOOKS_PATH . $classOverloader['filename'] );
					$thisContents = str_replace( $name."(~id~)", $classname, $thisContents );
					
					ob_start();
					eval( $thisContents );
					ob_end_clean();
				}
				
				if( class_exists( $classOverloader['className'] ) )
				{
					/* Hooks: We have the hook file and the class exists - reset the classname to load */
					$classname = $classOverloader['className'];
				}
			}
		}
	}
	
	return $classname;
}

Line 3846 would be this exact code:

$thisContents = str_replace( $name."(~id~)", $classname, $thisContents );

I found a few answers that told me to upgrade or uninstall the Group Color on User Links hook, but I did both and the problem still persisted.

If anybody knows why this is happening or has a solution, please let me know. Thank you!

[Yuu]

Well, I was able to fix this issue by upgrading our 3.4.6 board to 3.4.9. I'm not sure about an actual solution though, because this wouldn't work if you're already on 3.4.9, sooo...
But yeah, solved now I guess.

[Erza]

The question(s) in this support topic have been answered and the topic author has resolved their issue. This topic is now closed. If you have other questions, please open a new topic.