DLL Call doesn't work the second time

[Dobi]

The first time I open the VI, it runs properly. If I close and open it without exiting LabView, the VI isn’t executable anymore because of the broken arrow. I get the message, Call Library Function: function not found in library. In the DLL I can find and select this function, but it doesn’t run. I’m using LV 6.0.
Does anyone have an idea ?

[Ben]

Hi Dobi,

Try doing a close before you try the open a second time.

Ben

[Ben]

I tried it your way and got error.
I added a close and did not get the error and second attempt.
Did you try closisng?

Ben

[Ben]

Dobi,

The .dll does not appear to be re-entrant.
You have to do a close before doing another open.

Ben