NXT refuses to connect to PC and others NXT via BT simultaneously

[Merengue]

Hi,

quite recently I took out my two NXT's after a long while.
In the past I had a project to communicate (via Bluetooth with the NXT through a Visual Basic program. NXC was used for the NXT.

Now I wanted to communicate the same way but with a second NXT connected to first NXT (also via Bluetooth).

 

Now it seems that if the PC and the second NXT are connected I cannot send messages from my PC OR between the NXT's.

In code I can establish a connection with all devices. But communication fails after that.

 

I tried it in various ways but nothing works. Does anyone know a reason behind this?

 

Greetings Merijn