Zero points for originality of topic, but after searching for an appropriate existing thread to hijack, nothing came up. Probably a case of searching process deficiency.
After re-reading through an earlier-published section of a story when posting the most recent, a discrepancy came up. Namely, character X had memory of a confrontation with character Y on behalf of character Z, in Z's absence - something mentioned in the course of a single paragraph amidst many other events. However, Z distinctly recalled witnessing X and Y having this argument, and that fact constitutes something of a motivational tipping point. This discrepancy has since been cast to the void and the issue solved.
With the glut of wonderful people about, has anyone found a useful method for prevention of plot hiccups of this stripe? The gremlins of little contradictions, when collated into a gremlin union, have great potential to do a tale ill.