Hi, finally found my password and login name again, have been away for awhile and needed to get reacquanited with forum posting, ect., anyway...................
I tried uninstalling/reinstalling and found the same result, oddly enough, when I tried to reinstall the mods, I encountered some strange behavior, i.e., already detecting installed mods, handling multiple mods at one time, etc. It has long been my suspicion that uninstalling unistalling the game does not purge all mod elements as I alwasy seem to have problems like this, even in BG2......................
Anyway, the crash still occured most times (didn't once or twice for unknown reasons), even when I just control-y the wyverns. I later found killing the wyverns in the cloakwood wandering encounter area also crashed the game. I finally succeeded in getting a wyvern head by having Coran "not installed" then using control-y and quickly saving the game before it crashed again.
Still having these inconsistent problems, I next installed BG in a new directory, presumably will leave behind problems described above with residual wiedu installation.
Later on, I succeeded in resting in the wyvern cave and killing more wyverns and getting their heads, but prior to that, the game crashed again in the wandering area when I killed a wyvern. possible that save game files still had residual elements of mod in them? I don't know enough to say one way or the other, but considering all the measure I took to rid myself of that component, and still had intermittent problems with it, I don't know what else to say...............
In any event, I have moved on without the mod and tolerate the bug with Coran still saying "can't hang around, have some wyverns to kill" as it is....................