Eventually, it seems, we all get stuck in a race condition. Those whom stay up till 3am trying to understand remain 2 steps ahead of everyone else. Keep your troubleshooting logs on ,spirits up, max verbose while in the void.
Discussion
Hardest part is getting over the "I'm sure it'll work" fallacy/procrastination…. The mind plays tricks on you to ignore the obvious gaps smooth it over with excuses and placations ... it all mostly works but not enough to waste a weekend on postproduction bug fixing