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Error 1502 occurred at -> AB_Build.lvcla

Error 1502 occurred at -> -> -> -> -> -> -> -> -> -> -> ->

Possible reason(s):

LabVIEW:  Cannot save a bad VI without its block diagram.

Message 1 of 6

Me too!


Update: Enable Debug resolved the issue.

Message 2 of 6

I also found that enabling debugging  eliminated the error 1502 during build, but then I looked and found a Boolean constant wired to the selector terminal of a True/False case structure.  Changing that Boolean constant to a control allowed us to turn debugging back off.



Message 4 of 6

I had this occur when trying to trigger an event based on "value change" of a latched Boolean.

Doug Ferguson
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Message 5 of 6

The latched boolean was not the real issue. The issue ended up being a use of Match Pattern where I only wired String and Regular Expression inputs and only the before match output. Once I wired to handle the offset past match it was able to compile and save.

Doug Ferguson
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Message 6 of 6