Run-Time Error when adding chart to protected sheet

I have a database macro which creates charts. I just finished the program, and after protecting the sheets. I can no longer add charts. I get an error on the line where you add the chart:

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Error:

Run-Time Error '1004': Application defined or object defined error

I protected all the sheets manually (same password) and added the following protection code (all under one same password):

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Any ideas on what I am missing?

Thanks.

The Userinterfaceonly:=True option is unreliable with objects, in my experience, so I would suggest you unprotect, add the chart then reprotect.

The reason I am trying to use userinterfaceonly is because I have over 20 sheets, and protecting and unprotecting them all individually would take a while. Are there any other options out there?

EDIT: unprotected and protected each sheet in vba separately. works fine.

Well, your code ought to be:

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but again, I don't know how reliable it would be.