Thanks for looking into this esmi.
In the cases investigated by myself and the developers at Graph Paper Press, the problem seemed to be the amount of RAM required to process a single script, it now goes over the normal limits when more than 15 menu items are selected. My servers have a 32MB limit and that should be fine. So this is very curious.
Upon further investigation, we found this;
Which gave us the clue that it might be memory but maybe not.
I'll look into the "max variables" limit and see if that is the problem. But my feeling is that, it was never a problem before. It seems this one new feature is taking up too many resources and needs to be optimized to run on standard servers. Like I mentioned above, I can have unlimited menus with GraphPaperPress themes using their legacy menus. But the new WP 3 Menus will not allow the exact same set of menus on the exact same theme on the same server, with all plugins loaded and also with all plugins turned off. ??
I appreciate the insight from the link you posted. I'll also pass it along to the GPP developers, who would also be interested in a solution as some of their new themes depend on the new Menus feature. They always dread having to require their customers contact their Hosts to change server settings.
But I am not a code person, I'm an artist. So I'll need to know what to ask for when I contact my server hosting company.
Here is the link to my site's php.info page;
Could you please take a look at it and tell me which variable(s) you think I should ask to have changed? There are 4 instances of "max_vars" and I have no idea which one (or all?) need to be changed. My server has "post max_vars" and "request max_vars" each set to 200. Should I ask to have them set to 300, or perhaps higher?
Your help in this is most appreciated.