Starting USB Printer Crashes Guest & Host

[OmaSteak]

Hello,
Host system is Windows 8 and guest system is Windows XP. Running current VirtualBox version 4.2.18 r88780 with same update Guest Additions. I use a Brother MFC220 USB printer on both host and guest systems which has been working fine until this latest new version of VB. When I want to print something from inside the guest, I disable the printer control software on the host and then right click on the USB devices VB icon and enable the printer on the guest. This has worked well since I started using VB. Today, when I went through that process as soon as I enabled the printer in VB, I got a BSOD on the host system with a message like "IRLQ not less than or equal vboxmanage.exe" with an automatic restart of the host system in just a few seconds. After the Windows 8 host restarted and I started the VB manager and clicked Start to reopen my Windows XP guest. The XP guest went through a CHKDSK routine before rebooting which indicates to me the XP system crashed too along with VB. After the XP guest restarted, I was able to transfer the document I want to print via the shared folder to the Windows 8 host and, after closing the guest system & VB manager program, print the document successfully from the host to the MFC220. Evidently, there is something in the 4.2.18 version of VB/guest additions that is causing this system crash. Any ideas on a fix? Thank you.
OmaSteak
PS - Since I was able to successfully restart the Guest, I didn't think a log file would capture what happened in the previous crash so no log file attached.

[Perryg]

Possible regressions with version 4.2.18 should be discussed HERE where the DEVs can find it.

[OmaSteak]

Thank you Perry. I posted the message where directed.
OmaSteak

[Perryg]

Thank you. I'll lock this one to keep down clutter.