During the installation of Cisco VPN Client on a Windows* Vista computer, I get the following error when is trying to install Cisco Systems Virtual Adapter:
Error 1722. There is a problem with this Windows installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor.
It appears that there is a conflict between the drivers (FSLX.SYS and Cisco Virtual Adapter) when there are Active layers; for some reason, the installation process of Cisco VPN tries to go into the redirect(C:\FSLRDR\layernumber\SID\[B]TEMP[E]) of Software Virtualization Solution to do the installation.
This issues is addressed in Software Virtualization Solution 2.1.3071. See Knowledgebase article 46118 for details.
Software Virtualization Solution 2.1
Microsoft Windows Vista
Cisco VPN Client 5.0.01.0600