Chromatography Forum

Hell everyone,
I just joined to this website and I am working with very old GC which is HP6890 and I am using A.06.03 chemstation version. After injecting any kind of samples at 26.2 min this error" Float point exception invalid number" then " HPCORE caused a general protection fault in module HPCORE.exe at 0003:3646" comes up. I am so confused please help me to fix it.
Thanks

1. Your instrument is not "very old". I would kill for a 6890. I have a Varian GC I run daily that was installed 20 years ago.

2. The floating point exception issue is one I've seen with Agilent's LC Chemstation. Here's the thread I posted that related to my problem. However, you should contact Agilent and ask them if there might be a software patch or another recommended course of action before you start doing anything extreme.

viewtopic.php?f=4&t=13526&hilit=chemstation

I believe all I did was perform the windows cleanup and defragment my drive on that computer, but I believe (perhaps remembering incorrectly) that there are some caveats from Agilent about particular drive maintenance activities that you should follow...

And a little Googling found the article I remember seeing before on computer maintenance.

http://www.chem.agilent.com/Library/Sup ... _maint.pdf

We have a few 5890 units on A.06.03 and haven't experienced that.

I agree that 6890 is not old. These units are VERY reliable.

Sounds like a software issue, what version of windows and type of computer is this? I agree to defrag and run chkdsk/scandisk. You could also try creating a new instrument in the configuration editor and then re-create your methods to rule out corrupt files. You should be able to run the IQ (install qualification) if that revision has it, check under the start menu info for chemstation for anything that says IQ or install qualification and it will test for corrupt/missing files.

Maybe your method contains runtime event which takes place at 26.xxx min.
Try to examine the method for that magic timepoint.