InstallBuilder 6.3.1 released!

We recently released version 6.3.1 of InstallBuilder, which includes the following improvements:

New <sha1> action
New <md4> action
New <addDirectoriesToUninstaller> action
Added <password> tag to <addUser> action
Improved <httpProxyInit> to autodetect system proxy settings
Improved RPM integration
Improved Qt look and feel on Windows and OS X
Validate user provided input for parameters while creating them.
Added Windows support for user and group manipulation actions
Fixed <registryDelete> failing to delete keys on Windows 64bit
Documented windows_os_service_pack
Prevent fileTest rule from failing when testing a non-existent link
Fixed autoupdate returning update available when check_for_updates was set to '0'
Fixed Windows 7 not being recognized when Windows 7 Logo Toolkit is installed
Fixed symbolic links not being properly packed when included as <distributionFile>
Fixed variables not being resolved in some Autoupdate project tags.
Fixed error parsing Autoupdate projects containing utf-8 BOM
Built-in registry keys are now created in the 64bit view when <windows64bitMode> is enabled
Fixed Windows 2008 autodetection failing in some environments