ABAP Project does not open

Hello.

i have Eclipse Luna (64bit) installed and using JRE 1.8. ADT were installed successfully.

I'm using Win7/64bit and SAPGUI 7.40 PL1 Hotfix 1.

I can open the ABAP perspective in Eclipse.

But when i try to create a new ABAP Project nothing happens.

But on a computer of colleguage a window opens asking for SAP application server.

Is there any way to analyze whats going wrong ?

Thanks for your support and help.

Sebastian