Cisco VPN Client no longer works after installing Sun VirtualBox

I am running XP SP2 on my laptop.  I use a Cisco VPN Client and a Nortel VPN Client to connect to various company servers.  Recently, I installed Sun VirtualBox to test some other OS's and now when I try to connect to the Cisco VPN Client I get an error "Reason 442: Failed to enable virtual adapter".

It looks like it is going to work before the error occurs...it goes through the Negotiating Security policies step as well as the Securing Communications channel step, but then the error occurs.

The Nortel client works fine.
robrubinAsked:
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rtoomeyCommented:
My experience has been that Nortel and Cisco VPN clients do not peacefully co-exist in the same OS partition. There is, in fact, a Cisco VPN client FAQ post on this subject at http://www.cisco.com/en/US/products/sw/secursw/ps2308/products_qanda_item09186a00801c2dbe.shtml. I think it's a pretty elderly FAQ, but it probably still applies. (Search for the "Can I have VPN Clients from other vendors, such as the Nortel Contivity VPN Client, installed simultaneously with the Cisco VPN Client?" question.)

 I know that there are specific version of the Nortel client and the Cisco client that can be installed on the same OS partition and work together, but invariably, one vendor or the other provides an upgrade which ends up breaking things. Adding yet another VPN client only makes problems more likely. My advice: use disk partition or virtual machone software to keep the VPN clients segregated.
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Hill-manCommented:
I experienced the same issue with my  after installing Virtual Box on my XP machine.  I did not have another VPN client installed, so it was the install of Virtual Box.  I ended up removing Virtual Box and the Cisco client, then installing Cisco back on.  The removal of Virtual Box was nasty is my main memory of it.
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