I'm not aware of any limits on categories, albums, pictures, groups coded in Coppermine.
When you say 'cannot create, delete or modify them' - what error message do you receive in each case? (Turn on Debug if just a generic error message is received.)
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When you say 'cannot create, delete or modify them' - what error message do you receive in each case? (Turn on Debug if just a generic error message is received.)
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