Huge error message when uploading avatar

[Stefan118]

I resently upgraded vB from v 4.1.0 to version 4.1.1.
In version 4.1.0 i had added an avatar to my profile.
A member pointed me at this error today.

In V4.1.0 i did not get the error, so i guess it must have came with the upgrade.

This is the error that i get. (see attachment)
Note: It DOES update the avatar correctly.

When i Rebuild Custom Avatar Thumbnails in the AdminCP, I get a lot of pages FULL of this error message. (see second attach)

Is this an error within vB, or an error just on my site?
I have installed no extra options since i upgraded.

[Stefan118]

nobody?

[DFORMS]

I have the same issue...

[Lynne]

Try disabling your modifications/plugins and see if you still have this problem.
Note: To temporarily disable the plugin system, edit includes/config.php and add this line right under <?php

define('DISABLE_HOOKS', true);

[Stefan118]

Ok, thanks...
That solved the error...

Now 1 by 1 all the plugins / modifications reinstalling to see where the problem is.