Warning of "invalid references"

Running a worksheet with vba, at the start of the code I turn warnings off and at the very end of the code I turn them back on.

When the routines complete a warning is raised:

A formula in this worksheet contains one or more invalid references.
Verify that your formulas contain a valid path, workbook, range name, and cell reference.

OK. How? When I run Error Checking everything comes up clean.

Clicking on "Show Formulas" shows no formulas for there are no formulas on the sheet to show, just a chart, and clicking "Show Formulas" just turns my dates into serial numbers and screws up the display of the two comboboxes, messing the fonts and drop-down arrows, and since closing and reopening didn't revert the comboboxes back to normal I will now have to blow them away and resurrect them. Ahhhhh, and I also see Show Formulas also messed up my command buttons. nice...

The only way I find to avoid the error is to turn Warnings OFF at the start of the charting routine and NEVER turn it back on. Not a good-feeling solution.

I made certain that none of my names had any errors in them. Everything looks proper. So what next?

I fear something will create an error for me now along the lines of Murphy's Law, so I really would like to find it and knock it out before it bites me!!!

Thanks!

Only a sample workbook will help really... can you upload one? Go advanced then use the paperclip icon

I have got to learn how to sterilize these darned things; I build them around actual data, and that data is almost all PI and PII; VERY frustrating when I know I need to provide an example but I have to figure out how not to creak confidentiality...

I will work on it; I can't ignore the fact that good people like yourself ar out there to help me and this is the one barrier tripping me up.