[an error occurred while processing this directive] - only happens on large form
I have a form that contains an album of photos. The photos are pulled from the database depending on which album is selected. Each photo has a checkbox. The user selects the desired photo and then presses submit. When the user presses submit, the checked boxes are sent to another page for processing. So far this works fine for most albums, with the largest working album around 100 photos, but there is one album that has 262 photos. If a user tries to submit the form from the large album, I get this error:
[an error occurred while processing this directive]
Any clue what that might be, and why it only happens with the larger album? I tried searching around and I've already tried switching the ipconfig file to FastCGI, but that didn't work. I'm not sure what else to try, as I have no clue what is causing the error.