Plugin can’t handle 10,000 + images in media library?

I’m trying to user this plugin to add alt tags to about 10,000+ images in my media library (using the “Update ALT” screen), but all I get is a “loading” text indicator that never changes whne I click on the blue “Start Update Only Media” button. Also, when using Chrome .. I’m getting a 500 Internal Server Error when trying to call wp-ajax.php.

I was able to successfully use this plugin on a staging environment to add ALT tags to about 6,600 images, which makes me wonder if I might be up against a memory limitation. Is there any way that I can debug this more easily? Or is there a setting that I can change somewhere that might allow me to exceed the memory limit?

Thanks,
– Yvan

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