8-3-5b
 

8-3-5b ...., "unless in conflict with other rules,"

What rules are they talking about?

Possibly this: team-A is snapping from the 18 as a result of a penalty enforced against them on a TRY down. During that down, for whatever reason, team-B commits what would be a PSK foul.

PSK is not applicable on a TRY (or successful FG), but 8-3-5b says to enforce a team-B foul at the succeeding spot, which of course would be in conflict with the "other rule" (2-16-2-h1).

It is a mistake.
 

Actually, The wording at the end of 8-3-5b "unless in conflict with other rules" is nothing more than a mistake (Long Story) and will be removed in the 2009 Rule Book. You can draw a line through it for 2008.

So,
In the event of a B foul during a successful try, the succeeeding spot is always:

The subsequent kickoff in regulation, or,
The start of overtime.

With all due respect to Theisey and his sample play, any foul during a successful try would be penalized, and, while it may look, smell and taste like a PSK foul it can not be since PSK does not apply during a try. Hence, since all fouls during a successful try shall be penalized you are left with the two options above.

My understanding is the NFHS will issue a list of errors of which this is one.

Please see CASEBOOK Play 8.3.5B SITUATION B for additional clarification.

well.. it was the first thing that popped into my head. On second thought, it was a poor shot at it.