problems running a executable with VISA

[Jon@NIST]

I recently developed a program to interface with a relative humidity Hygrometer. Bsically all I do is read in a string from the hygrometer. To do this I used VISA comands that I found in a a serial communication example. I got the program working fine here at my computer. I built the executlabe file and built the run-time engine installer. I then when and installed my program on another comuter, that does not have labview installed. The program starts and looks right but it doesn't work. Could this be a VISA problem or what. My computer here is running windows XP pro and the computer I'm installing this onto is running windows 98. I'm lost what could be going wrong

[Mads]

Have you remembered to include the installation of the VISA runtime engine (In LV7: Installer settings -> advanced -> serial port support)?

[Jon@NIST]

I'm running LV 6.1 not 7 can I still do this some how or do I have to upgrade to LV7

[Mads]

Yes you can, it's made easier in LV7 due to NI no longer supporting the old serpdrv driven serial VIs (which you could use instead if you want to avoid the VISA install...), but it's there in LV6 as well. On your LV CD you should find an installation set for the VISA RunTime, or you can download it at:

http://digital.ni.com/softlib.nsf/webcategories/85256410006C055586256BBB002C0E91?opendocument&node=132060_US

You can then make the installation of your application run a silent installation of VISA when it's finished:

Read how to make the VISA install "silent":
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/0730a66245e6808086256ca8006e2183?OpenDocument