Pages and Numbers crash when using custom date formats
Pages and Numbers Crash if creating Custom Date Format. MAC
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Pages and Numbers Crash if creating Custom Date Format. MAC
[Re-Titled by Moderator]
I found this a problem too. I was using Numbers.
However, I discovered that this was caused by selecting an entire column that had more than one type of format.
eg; I had Text on line 1 but Dates on all the others.
I simply selected the specific cells I wanted the special formatting to apply to and then applied the new customised format. The new format was applied successfully to the cells.
Pages and Numbers crash when using custom date formats