How to revert NI-PAL for SCXI-1200 compatibility

[jsamm]

We have a legacy system with Labview 6.1 and DAQ 6.9.3 on Windows XP/Professional.  Our 4 port RS-485 PCI card nolonger works and an exact replacement was not available, so we purchased a replacement RS-422/485 4 port card.  It would not work with the current drivers so we upgraded to NI-SERIAL 3.8 which came with the card.  Once we did this, the SCXI-1200 module in the SCXI-1000 box nolonger can be loaded by the driver (error code 10).  We downgraded to NI-SERIAL 1.8 which works with the new RS-422/485 card, but the SCXI-1200 driver error persists as NI-PAL was not downgraded, it still maintains the Feb 2011 version.  On another coumputer we loaded N-DAQ 6.9.3 and NI-SERIAL 1.8 and the SCXI-1200 driver is happy with the NI-PAL 2005 version that was loaded.  I think if I can revert the Feb 2011 version of NI-PAL (installed via NI-SERIAL 3.8) to the 2005 version of NI-PAL (installed via NI-SERIAL 1.8) everything will work.  Problem is, uninstalling NI-DAQ or NI-SERIAL does not uninstall NI-PAL.

[KHartley]

Jsamm,

Where are you getting this error(in LabVIEW or MAX)?

Could you attach a screen shot of the error?

Is there a description for the error?

I'll need to look into downgrading the NI-PAL driver some more before I can recommend a method. If you can reply back with the information above I can look into your issue some more. 

[jsamm]

After the Feb 2011 version of NI-PAL was installed, in device manager the SCXI-1200 device showed an error (yellow circle icon).  When we uninstalled and then reinstalled the SCXI-1200 device the error would occur saying the driver was loaded but could not be started.

I built a new disk with LabView 6.1 and NI-SERIAL 1.8 and all drivers load without errors, but I cannot get the old disk to a workable state.  Perhaps I could uninstall all NI products and reinstall, but I was trying to avoid doing that.

[KHartley]

Can you open up MAX and under software NI-PAL should be listed. What is the version number? I'll try something out on a test machine before I tell you to do anything just so we don't mess up your computer.

[jsamm]

The NI-PAL version is 1.5.6

[KHartley]

JSamm,

I tried performing a unstallation using an uninstaller and reinstalled a previous version. It resulted in some of my LabVIEW services to stop running correctly. So probably the quickest solution for you would be to uninstall LabVIEW. 

I believe most of the related files are stored in the system32 directory. 

C:\Windows\System32

If you go there and start typing "nipal" it should go to those files. You can check to make sure they are removed once you have uninstalled LabVIEW.