SAP Netweaver Trial Download - Problem with SAPGUI Installation

Hi Experts!

I've installed the SAP Netweaver Trial Installation - it tooked quite a long time, but finally it finished successfully.

The server process is running fine and everything is green.

But I'm not able to install the GUI. Everytime when I start the installation, I got the message that the JCE_POLICY_ZIP

couldn't be found. So I downloaded it and set the regarding path to this zip_file in the system-variables.

If I start now the gui_installation a java_exception appears saying that the defined path in the system-variables couldn't

be found or there is no access.

I tried to solve this issue by give every permission within the OS to this file.. but also that doesn't work.

I don't know what to do else.

Could somebody please help me?

Thank you very much!