InstallShield Limited Edition does not currently support 64-bit installations. This is described in the installed documentation in the topic of upgrading to other versions of InstallShield. This is also implied in the online document "Does InstallShield Limited Edition for Visual Studio 2010 Meet All Your Installation Requirements?" which mentions “Support for 64-bit COM extraction” is not included in the limited version (this is just one of many aspects of 64-bit installations).
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