Your Citrix License Server must be at version 11.5 to install that hotfix roll up pack.
Here are the requirements for that hotfix roll up pack.
The Citrix License Server must be at version 11.5 to install this hotfix rollup pack.
The Microsoft Visual C++ 2005 SP1 Redistributable Package (x86) must be installed on all servers before installing this hotfix rollup pack. This can be obtained from the Microsoft Web site.
With CPS4.5 R02/CPS4.0 R05 Citrix introduced the Commandline Parameter Validation for XenApp, see Knowledge Center articles CTX117316 and CTX115245.
The Suite Monitoring and Alerting (SMA) service used by the Access Management Console might not start after installing Hotfix Rollup Pack 3 and restarting the system. In order to fix this problem, you must upgrade the .NET version on the system to .NET 2.0 SP1.
Before installing this hotfix rollup pack on servers licensed for Standard Edition, you must migrate those servers to Advanced Edition. Standard Edition was discontinued on Citrix Presentation Server 4.5; installing this hotfix rollup pack on servers licensed for Standard Edition might cause error message to appear.
After you install this hotfix rollup pack, Presentation Server 4.5 licensing will be enforced for the Application Streaming feature available in the Enterprise and Platinum
Hope that helps.