A good deal of my Lotus
Problem On a Windows 2008 server, the Lotus Connections 2.5 Install may fail, when performed by a user who is a member of the administrators goup.
Resolving the problem When installing on Windows 2008 you will need to either disable User Account Services through the Control Panel, or right click on the install program and explicitly run as administrator.
The technote contains the excerpt of the lcinstalllog.txt to look for if you think you are having this issue. Technote 1408390 Problems using the graphical installation process for WebSphere Application Server Version 6.1 on Windows 7 and Windows Server 2008 R2
Problem(Abstract) When you attempt to use the graphical user interface to install IBM WebSphere Application Server Version 6.1 on Microsoft Windows 7 or Windows Server 2008 R2, you might encounter the following error message from the InstallShield Wizard: The installer is unable to run in graphical mode. Try running the installer with the -console or -silent flag”. This issue is specific to using Windows 7 or Windows Server 2008 R2.
Cause The IBM Software Development Kit (SDK) Version 1.5, which was bundled with WebSphere Application Server Version 6.1 in 2006, does not properly recognize the Windows 7 and Windows Server 2008 R2 operating systems.
The technote details the fix which is either to run the install in silent mode or set the install.exe in to Compatibility mode