MAX 4.5 corrupted by DAQmx 14.1 patial installation

[IanDeaville(ZF)]

Hi,

I am posting this on the LabVIEW board because I can't find one specifically related to MAX issues.

I have a machine with two oldish USB devices working with a LabVIEW 8.2 application, with DAQmx 8.7.  OS is Windows XP.  The software started throwing up errors, and MAX (v4.5) was struggling to connect to both devices.  I was seeing error -50405.  After some research it seems that there may be some issue with the USB connection.  There was also advice to install a newer version of DAQmx, as this may have better USB fault tolerance.

I downloaded & started to install the latest DAQmx, V14.1.  Part way through I relaised that this does not support LabVIEW 8.2, and I do not have the time or inclination just now to drag the code into V2014.  So I cancelled the DAXmx installation part way through.  Maybe this was a mistake.

I now cannot run MAX at all.  Part way through the initialisation it crashes, and Windows wants to investigate the error.  I assume that something from DAQmx 14.1 is incompatible with MAX 4.5.

I cannot uninstall DAQmx 14.1.  It does not appear in the list of PI software in the Control Panel - Add or Remove Software tool.  I have repaied DAQmx 8.7 several times, and MAX 4.5 as well.  I have trawled through the registry and the executable folder for MAX to manually remove anything I can find from 14.1. 

The LabVIEW tool still works, but I cannot start MAX.  I will need to fix this in the next few weeks as the sensor calibrations are handled through MAX. 

Any ideas?  What other information / log files would be useful to help diagnose this?  All information very gratefully received. 

Ian

[natasftw]

Try a forced reinstallation of the older DAQmx drivers: http://digital.ni.com/public.nsf/allkb/ADD22E807D5A12AD862579EC00760F79

Each version of DAQmx comes with a different version of MAX.  It's likely it started overwriting the version you had before you cancelled.

[chembo]

This maybe useful too: What is the Process For Resetting the MAX Database?

[billko]

You can try repairing whatever DAQmx it thinks you have installed.  If it's the new one, then you uninstall it afterwards and then reinstall the old one.

[IanDeaville(ZF)]

Thanks all for your suggestions.  I had already tried Repairing various installations (DAXmx, MAX) with no change in behaviour. 

I tried the /reinstall option with DAQmx 8.7, but this did not fix the issue. 

I have tried to create a VI to save the configuration to an NCE file.  I get error -2147467263 Not Implemented with the Copy Config command, and when I tried the Make Report tool I get the same MAX error, so calls to the MAX API are also not working.

I am concerned about using the Repair Database tool as I don't wat to risk losing the calibrations just now.

Does anyone know where MAX stores the calibration data, and if this can be recovered manually?

I am now re-installing DAQmx 14.1, so I can then fully uninstall it, and hope that it will fully remove itself from the system.  If nothing else I might get a newer verison of MAX so that I can backup all the system settings before attempting anything more drastic.

Thanks again, and any more ideas will be gratefully received.

Ian