Can labview 6i and 8 be used together on a computer?

[deveshk]

Hi

I recently installed Labview 8 on my computer. It already had Labview 6i. But after installing newer version, I was not able to make any modification to Labview 6i VI`s using Labview 6i. Though , I was able to run the 6i VIs using Labview 6i. Is there any problem with the installation or  I can work with both Labviews together??Labview 8 is working fine.

Thank You

devesh

[PaulG.]

I have had up to 4 versions on one PC and they all worked fine. The only time I got into compatibility problems was when I inadvertently modified and saved an old vi in a new version of LV ... then tried to open up the same vi with the original, older version of LV.

[Ray.R]

You can have multiple versions of LabVIEW installed on the same computer.  You can even run multiple versions of LV simultaneously.

Try to open your LV6.1 VI's by first opening LV then open File.  Or right click the VI and select open with and choose LV6.1.

However!!!! If you opened the VI using a more recent LV version and saved that VI while running the newer version, your VI is now saved as the later version..  Which means you can no longer open it with the older version...  If that is the case, you'll get an error message as you try top open the vi to that effect (saying that it is a newer version).

[altenbach]

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deveshk wrote: But after installing newer version, I was not able to make any modification to Labview 6i VI`s using Labview 6i.

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How did you try this? It should work just fine.

If you click on a VI, it will open with the LabVIEW version that you last used or whatever version is still in memory.

1. open LabVIEW 6i first and all VIs will will open with 6i from now on (and will fail on newer version). 
2. open LabVIEW 6i, then open LabVIEW 8, and VIs will open in 8.0. Now close 8 and 6i will again be the default because it is still in memory.
3. mix and match...

For more flexibiltiy, have a look at the LabVIEW Version Chooser from DataAct: http://www.dataact.com/LVC.htm

[deveshk]

Hi

Thank You for your replies. The problem I am facing is I am not able to make any modifications to Labview 6i VIs though am ABLE TO OPEN AND RUN then using Labview 6i. The left click doesnt seem to work anymore on these VIs .(It works perfectly in Labview 8 VIs.) So am not able to do any wiring or move around objects in Block Diagram.

I am not sure whether there is problem with computer or Labview?

Thanks

[altenbach]

This is very odd!

Have you tried e.g. "menu...view...function palette"?

Did you install both versions in their respective default location or did you possibly install both version on top of each other, for example. Once you start manually selecting install paths during installation, you might conceivably get conflicts.

[Ray.R]

I'm just trying to understand...

Are you able to open the VI using LV6.1 and to run it?  but not to modify anything on the block diagram??  -strange...-

If that's the case, try what Altenbach proposed..  Under the "Window" menu, select "show tools palette". You should be able to select a tool and do something (even write a comment) on the block diagram..

... otherwise... maybe you can post your vi..

[unknown00]

yes it is possible i am doing that now. if you want to open a file via lv6 and not lv8 you have to manually start the lv6 exe and open the vi. if you double click it it will automatically open with lv8. in other words make sure it's actually opened in lv6 and not lv8

if nothing is working, maybe uninstall and reinstall? that'd be the first thing i do

[Ray.R]

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@unknown00 wrote:
yes it is possible i am doing that now. if you want to open a file via lv6 and not lv8 you have to manually start the lv6 exe and open the vi. if you double click it it will automatically open with lv8. in other words make sure it's actually opened in lv6 and not lv8

if nothing is working, maybe uninstall and reinstall? that'd be the first thing i do

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" if you double click it it will automatically open with lv8."  Actually, it will open it using the last version used, so not necessarily LV8 (or latest version).

"if nothing is working, maybe uninstall and reinstall? "  That might be a little too hasty at this time 😉

[tbd]

Hi deveshk,

      In the LabVIEW [6i] IDE, the user can toggle between "run-mode" and "edit-mode" using <Ctrl>M.  When in "run-mode", the VI isn't editable.  Your "symptom" sounds very much like you're defaulting to, or stuck in, "run-mode".  I've no idea how this could happen!, however...

- in addition to the ideas above, it might be interesting to see what happens if you press <Ctrl>M.

Note, in "run-mode", font pull-down  and "alignment" selectors are not visible in the tool-bar, but tool-menus can still be opened.

Cheers!   

Message Edited by tbd on 07-07-2007 05:54 PM