Errors using If then Statements in a Macro

Errors using If then Statements in a Macro

I have created a macro that uses If then Statements.  About half of the If then Statements work fine but, the other half, when the statement is true give me an Application Defined Error.  No error if the result is False.  Below is an example of one If then statement that works and one that doesn't work.  I've named the Cells on the worksheet but even if I use the cell reference (A1), I still get the error message.  If I put the "IncludeTuition" instead of the "IncludeBookFee", then the If statement works.

Why would I be getting this error message?

Thanks

Works:  if range("IncludeTuition").value = "Yes" then

Doesn't:  if range("IncludeBookFee").value = "Yes" then