Flashing red border! (She can't hold it much longer, Captain!)

I did a very simple change to some code in my program and when I tried to run it, it got to the case structure where I did my little change and suddenly the border of that case started flashing red and blue.
Obviously this means something is wrong, but what? I'm a newbie and I've never seen this before. How can I pinpoint where my problem is? I put it into debug mode and I don't see where it's getting hung up. My code is obviously okay or I wouldn't be able to even start it.
Amateur programmer for over 10 years!

spaceman spif wrote:
I looked into the "breakpoint" tool and it looks like it's pretty handy. Based on your guys' experience, is it a fairly handy debugging tool? Or do you find the "highlight execution" tool is more useful? Any tips on using the "breakpoint"?
I mostly use highlighted execution, but it has it's limits..
For instance if you use a test executive like TestStand which calls a LabView vi, you may want to include a breakpoint to look at what is happening at that instance of the code. You can step into the vi, then use the highlighted execution to see all the values, etc.
If you have vi that need to run in "real-time" (transactions that are time-constrained), so you can't have "Highlighted" execution on all the time, you may want to freeze a certain portion and look at that. Breakpoints are very useful for this.
Experiment with it.. Who knows, you may like it as much as the highlighting the execution (which can be too slow at times).
Both are good tools.
JLV

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