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Perhaps this makes it clearer. What you are doing: What you want to do:

I just post something along the lines of "can't find it right now" and usually someone with better organisation than me finds the link. Damn. giving away all my secrets.

And then I have two problems...

So your subVI contains its own (perpetual) while loop -- is that right? You must understand: A subVI doesn't "finish running" until all of the loops inside the subVI stops. Therefore, Loop 2 in your Main VI cannot continue -- it is blocked because it is waiting for your subVI to "finish running". You don't need that subVI. Just put all the blinking logic in Loop 2. Anyway, it is best to post actual VIs, not screenshots. The screenshots might not show important connections.