Spawned SQL Server 2008 R2 Express SP2 setup Installation freezes when installing "SQL Server 2008 R2 Express SP2" from another installation package (Install Script custom actions). Log Files are attached for your reference.
Note:- There is no issues when we install "SQL Server 2008 R2 Express SP2" from command prompt or from SQL Server UI. This issue is observed only when "SQL Server 2008 R2 Express SP2" setup is launched as part of another products installation. This issue is not observed with SP1 (SQL Server 2008 R2 Express SP1) and also not observed with SQL Server 2005 Express SP3/SP4.