ActiveX Library behaving differently in IDE and Runtime (Adressing a Horiba Spectrometer)

Hello,

I have a problem with an ActiveX-DLL. The DLL is used to talk to a Spectrometer. If I run the VI from the development environment everything works. If I build the exe and run it, the DLL throws an error ("SDK Hardware Key not found. Insert Key to continue").
There is already a thread for this library and problems with it (https://forums.ni.com/t5/SignalExpress/Error-quot-SDK-Hardware-Key-Not-Found-quot/td-p/786744/highlight/true/page/2). Someone even postet the problem with the runtime but got no answers.

I attached the code as a screenshot.
I'm using Labview 2014 32bit on Windows 7 64 bit.

Has anybody an idea what might be the problem?

Thank you very much for your help.

Kind Regards
Michael Roth