Hello Terry.
There was the thread from this message #879301. I think the issue was with vartype when the type was vetted the data had to be checked for null. It failed for me in my particular application.I looked at the thread. Interesting < s >. As I said, I have not experienced this problem. But now I will keep my eyes open and be on the lookout for it. I'll report back here if and when and happens to me < s >.