The only time this has happened to me is if code is being run elsewhere. Try
putting the workbook in design mode or open with macros disabled.

"egun" wrote:

I have had this happen to me also. All of the sudden the VBA editor will
start trying to complete my lines, add quotation marks, syntax check a line
before it's even complete, etc.

I usually fix the problem by getting out of Excel and getting back in. I
wish I knew what caused it in the first place, but I don't.

I guess I just want to let you know I feel your pain!

Eric