Why am I getting an error message when I rename a worksheet?

[Guest]

I am following all rules on renaming a worksheet, yet I still get the error
message and can't do anything else until I rename the sheet correctly. It
turns into a cycle and I can't do anything else in the workbook.

 

[Guest]

hi,
if you have to rename it correctly.......maybe you're NOT
following all the rules....
wink!