Can't Shift Objects Off Sheet w/ no comments / Excel 2010

[Ifrite]

For unknown reason, my sheet starts to pop up this error message
"Can't shift objects off sheets" and I cant group any new rows. Here is a list of funny things about this issue,

a. my sheet has no comments at all
b. I can't insert new rows in new area of the sheet and it displays an error message "fixed object will move"
c. I can't group any rows in new area of the sheet
c. However, I can insert new column in new area of the sheet
d. I can group new columns without any problem

Any thoughts? I have been working on this model for a couple of days and nothings went wrong until this morning. This model is macro free and has nothing fancy(pivotTable/autofilter & etc) at all. Thanks a lot.

 

[RoryA]

Any data validation? Info copied from anywhere else?
If you press f5, Special... select Objects and then OK and Delete, does anything happen?

 

[Ifrite]

More info,

I cant delete any row in this sheet now and the error message still says "Cannot shift objects off sheet"
I try F5/Special to look for this mysterious object, nothing found. The Excel Options/Display is set to show All for objects.

I havent tried Macro yet but I prefer not to insert any macro into this file.

 

[Ifrite]

No data validation.
I did copy data from other files but through special paste / value only. This shouldnt generate any issue as I assume.

 

[RoryA]

Any conditional formatting?

 

[Ifrite]

Nope, and no autofilter, pivottable, sparklines and chart.
I only have some names created for this sheet, some functions and manual inputs.

 

[RoryA]

I don't suppose you can post it anywhere for review (no data required)

 

[Ifrite]

I just figure out that I had a few old comments hidden in already grouped old inputs. After resizing and formatting, the issue seems gone.
Thanks a lot for your help, Rory.

 

[RoryA]

No problem - glad you figured it out.