I have a vi that will not let me make many edits before it crashes.

[Bobj2000]

I have been working on a data acquisition program for over a year. Over time it has grown and become more and more complicated. Now the vi will no longer let me make substantial changes. After making edits, when I click, save, LabView crashes. There is no message, just the whole thing disappears.

I don't know what to do now. I need to make major changes to this vi but am unable to do so because of this LabView bug. I tried copying everything into a new vi, but have the same problem.

I developed this program initially on a Macintosh under OS9 with Labview 7. I upgraded to labview 7.1 and the computer to OSX. I have the problem in OSX. There is no going-back now.

[Mark_BFN]

I've never had such an issue, but I would try a mass compile (tools, advanced, mass compile) first.
Note which VI's have errors and strip them out.

If that doesn't work, individually save each subVI until you figure out which one is causing the problems. If you are using any third party daq software you may want to uninstall/reinstall it. Those third party dll's can get you (or whatever type of libraries OSX uses).

Mark