build dll error in application builder 8.6.1

[mitulatbati]

Hello,

I get always an error in the LV 8.6 application builder, when I build a dll. There is only one function in it, that has a string and an error input, and nothing else. I attach a screenshot of the VI prototype, and hier is the error description:

Error 1 occurred at Building DLL.
A component needed for Application Builder does not support the required functionality. This might have been caused by installing an older version of LabVIEW after this version was installed. Reinstall the current LabVIEW version to correct this issue.

Possible reason(s):

LabVIEW:  An input parameter is invalid. For example if the input is a path, the path might contain a character not allowed by the OS such as ? or @.
=========================
NI-488:  Command requires GPIB Controller to be Controller-In-Charge.

After that I reinstalled LV8.6, I tried to reinstall only the 8.6 app builder, but no success.

[Duffy2007]

Hello mitulatbati,

have you tried to repair your complete LabVIEW installation?

Can you post the code so i can try it?

[mitulatbati]

Hello,

thank you for the reply.

I have solved the problem. I uninstalled the last installed LV version, this was 8.0. Then ran appbuilder again in 8.6, then I have got an instruction to run applibs\lvdllbuilder\lvdb.exe. Since then works.

regards

Mitulatbati