When running TestProgram on a form I got the following error message: "warning: layout element name 6MosReviewDate resolves to a number".

The element, named 6MosReviewDate was a date element bound to a date type field.

I had no programming or references to this element anywhere.  I saw no other indications of problems in the Test Program output, so moved on again.

Could see nothing, could think of nothing that would cause this.  Then I got the idea to change the name. 

I normally don't start my element names with a number, but somehow I let this one slip in.  I changed the name from 6MosReviewDate to SixMosReviewDate, ran TestProgram, and the error message has stopped coming up.

Seems like problem solved, but thought I would mention it here in case it might save someone else some searching.