FWIW, on recurring events I usually go out only 1 or 2 years. Things change and it would really suck to have to delete 6 years of weekly meetings and then re-enter them with a different time or place or day :D
I'll also add that the error messages are sometime a bit cryptic for non-programmers such as you and I.
Anyway, glad it's sorted out for you!
Merry Christmas!
Kevin