ugraded from 1.5.3 to 2.1.2 now image uploads not working

I upgraded our install from 1.5.3 to 2.1.2 as per the subject, and now I am finding that image uploads (themes, collection, etc. - any image upload) are not working. That is, I receive an Omeka error and nothing occurs. Permissions are 775, the correct .htdocs file was uploaded. I have seen something on the forums about servers possibly blocking the proc_open() function, but I have no idea how to determine if that is our issue, or what it could be. Is that an apache config setting?

thanks! Steve

Disabled functions is a PHP setting.

You can check with your host, or a simple script can usually show you what functions, if any, are disabled:

echo ini_get('disable_functions');

Thanks John, I will check!