Reader123,
I fear you may be right. But if you wish to appreciate the enormity of the challenge involved, read #2307 - #2312 on p. 116.
My system is as Chugalug explained in his #2310, and it has worked fine for quite a time now. This is something right out of the blue yesterday.
I suppose we'll ferret it out in the end, and meanwhile I'll keep you posted, but it's no more story TFN, I'm afraid. I'll leave the field clear for Taphappy. (I'll not be bone-idle, I'll store up a few episodes in advance of publication).
But thanks for the suggestion all the same.
Danny42C