How can I go back to 7.0 from 8.0 evaluation?

I have been using Labview 7.0 for a while now, and I have been happy
with it. A new project came up that has pretty specific requirementsy,
so I thought that an upgrade to 8.0 would be in order. I installed the
8.0 evaluation version and have been using it for about 20 days. I
don't feel that the upgrade would be worth the money, so I want to move
back to using 7.0. My problem is that the 8.0 installer seems to have
converted every single VI on my computer to labview 8.0 format, even
ones that I have never opened with 8.0. I do not have a licence for 7.1
so saving everything to a previous version isn't an option. I do have
archives, but right now I am looking at losing about a month's work if
I can't get the newer files back. What do I need to do in order to get
my files back so I can work with 7.0 again?

Hi Tim,
The LabVIEW 8.0 installer does not modify any VIs outside its install directory (usually Program Files\National Instruments\LabVIEW 8.0).  Are you referring to the icon of the VIs that you see in Windows Explorer?  It's true that a LabVIEW 8.0 install will change the appearance of the icon for any file on the file system ending in the extension ".vi", but the files themselves are not modified.  If you uninstall LabVIEW 8.0, and a previous version of LabVIEW is still on the system, you should see the icons of ".vi" files go back to the old, traditional 7.0 style.
If the VIs themselves have somehow been modified and saved in 8.0 format, I'm guessing that may have happened from an ill-advised mass compile.  When you mass compile VIs, they are re-saved in whatever version of LabVIEW you used to perform the mass compile.  So if you have indeed saved the VIs in LabVIEW 8.0 format, then in order to use them in LabVIEW 7.0, you will either need to restore the VIs from backups you have made, or do a two-step Save for Previous...saving first from 8.0 to 7.1, then from 7.1 to 7.0.
Good luck,
-D
Darren Nattinger, CLA
LabVIEW Artisan and Nugget Penman

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