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LabWindows/CVI locked up and will no longer run

Base Version 7.1 For Windows, no patches or updates, fully licensed (not evaluation)
Windows 2000 fully updated and patched.

I attempted to build a distribution kit for my application (which incidentally has been done by two other engineers here on other computers). When clicking the menu item, the IDE just sat there forever with the window grayed out. No menu items could be selected, the window close, minimize, and maximize buttons would not work. Task Manager reported the application as still running. I left it alone for about 30 minutes before I finally used the Task Manager to kill it, at which point the "Application is not responding" dialog appeared and I forced the application to stop.

Upon attempting to run LabWindows/CVI (CVI) again, it would only open minimized to the Windows task bar with the title of the project I had been working on. I could not maximize or restore it and again had to use Task Manager to kill it. I tried the CVI "Repair" option, but that did not work. I have since uninstalled CVI, rebooted, re-installed it, rebooted, many times with no luck. CVI would just keep coming up the same way - minimized to the Task Bar. We have several applications that were built using CVI, so I removed all of them from my system (rebooting each time), and deleted the directories they were installed in. I then tried re-installing CVI again, again with the same result.

Now, CVI will not even install. When running the installation from the CD, it appears to install (it goes through the entire process, creating the Start Menu items, etc.), but when looking at the directory where CVI is supposed to reside, there is nothing in it but documentation files. I can no longer continue with any development because CVI will not install no matter how many times I try to remove and re-install it.

I hope someone can help me resolve this ASAP.

Thanks,

PGA

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Hi PGA,

Please call or email to support so we can provide you with a program and procedure to completely remove CVI from you system.

If you do not have support, then there is one procedure we can try.  Please note that this involves removing registry keys, and could cause damage to the Operating System, which we cannot be liable for.  First, uninstall CVI and remove any program folders (being careful not to delete applications you have written).  Then, save your registry settings (Start >> Run >> regedit >> File >> Export).  Then delete the folder HKEY_LOCAL_MACHINE >> SOFTWARE >> National Instruments >> CVI (not CVI Run-Time Engine).  Do the same for the CVI folder under HKEY_CURRENT_USER.  Next, try rebooting and re-installing CVI.

I hope this helps!

Cheers,

David Goldberg
National Instruments
Software R&D
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