Unable to add/delete row

P

PeaceHere

My workbook has several sheets. One of them doesn't allow me to add
or delete rows. This means when I right-click on a row, the
"insert", "delete", "clear content" is grey out.

This only happens to this sheet, as the other ones don't have such
problem.

I've been scratching my head.... The worksheet is unprotected. What
can be wrong?
 
P

PeaceHere

Forgot to mention... I use excel 2007. I'm not able to use "insert"
from ribbon either. It's grey out. I am, however, can modify
contents of cells.
 
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