Operation is not valid due to the current state of the object - HASP HL dongle

Question

I am trying to add reference to my Delphi Prism project for HASP HL. So, I can communicate with the USB HASP HL dongle.

After the initial set up, I couldn't get my program to communicate with the USB HASP HL dongle. So, I watched a youtube tutorial video by SafeNet or Alladdin and followed their instruction to the teeth exactly, but I ran into another problem, which I can't seem to figure out.

As part of the HASP HL dongle setup, I am supposed to add reference for hasp_net_demo.dll to my project. Everytime I try to do that, I keep getting this error, Operation is not valid due to the current state of the object, and it won't let me add the reference. I learned that along with hasp_net_window.dll reference you also need to add reference to hasp_net_demo.dll, because it has the actual namespace and class to communicate with your HASP HL dongle.

So, what can I do at this point? or What options do I have?

Please, help. I have been looking at this problem for the last 3 months on and off and still can't find a solution.

Thanks in advance,

Answer 1

I was able to resolve my issue. First, you need to make sure that you are writing application for framework 4.0. If you are, then you need to download their latest Runtime API for .NET dll files.

Sentinel HASP DotNET Runtime API

apidsp_windows.dll
apidsp_windowsx64.dll
hasp_net_windows.dll
hasp_windows_xxxxx.dll

Put them all in your project folder. Then, add reference to hasp_net_windows.dll file to your project file.

Then, you are done.