Trying to enable seamless mode, which is grayed out

[Mario83w]

Hi, I'm trying to use seamless mode on a Windows XP virtual machine, but it's grayed out.

Guest Additions is installed, and seamless mode is the only feature that doesn't work. Auto-resize, mouse integration etc, all works fine.
I've searched the forums and other websites, but I was unable to find a fix.

The host is a 64-bit Windows 8.1 and is running VirtualBox version 5.0.24 r108355
The guest is a 32-bit Windows XP Home Edition with Service Pack 2 running VirtualBox Guest Additions 5.0.24r108355

The VM log file is too big to attach, and I can't post urls yet, so I'll post a link to pastebin tomorrow if needed.

[socratis]

The VM log file is too big to attach, and I can't post urls yet

Even if you zip the log file? There is no need to post URLs, just zip the log file and attach it here. See the "Upload attachment" at the bottom of the form.

[Mario83w]

I didn't think of that, thanks.

Here is the log.