{"id":909324,"date":"2014-12-05T12:42:24","date_gmt":"2014-12-05T20:42:24","guid":{"rendered":"http:\/\/tri.be\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/"},"modified":"2015-01-13T11:55:02","modified_gmt":"2015-01-13T19:55:02","slug":"500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1","status":"closed","type":"topic","link":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/","title":{"rendered":"500 server error on WP admin pages when upgrading to version 3.8.1"},"content":{"rendered":"<p>Hello! Our site was running an older version of Events Calendar Pro (3.0.5 I believe). I upgraded the free Events Calendar plugin to 3.8.1 and at that point things were working. (Although some features were not working, e.g. the weekly calendar view.) We then purchased a new license key and tried to upgrade the Events Calendar Pro plugin to 3.8.1. This broke the admin back end of the site (500 internal server error) &#8211; although the public side of the website still worked. I could not load any of the Dashboard pages &#8211; I got a 500 error each time. As soon as I manually (via FTP) removed the Pro 3.8.1 plugin, the admin pages were working again. <\/p>\n<p>I switched to the 2013 theme and deactivated all plugins except the free Events Calendar 3.8.1 plugin, cleared the browser cache, and attempted to install the PRO 3.8.1 plugin again. The same thing happened &#8211; I got a 500 error on the WP admin pages and had to manually remove the plugin. (Again, the public side of the site loaded as normal.)<\/p>\n<p>For now, I have reverted to the old versions of the free and PRO plugins, and things are working again. But we would like to upgrade to the newest versions. Can you help? I have the server error logs from the time period when I was attempting to install the PRO 3.8.1 plugin. <\/p>\n<p>thanks!<\/p>\n","protected":false},"template":"","class_list":["post-909324","topic","type-topic","status-closed","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>500 server error on WP admin pages when upgrading to version 3.8.1 -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"500 server error on WP admin pages when upgrading to version 3.8.1 -\" \/>\n<meta property=\"og:description\" content=\"Hello! Our site was running an older version of Events Calendar Pro (3.0.5 I believe). I upgraded the free Events Calendar plugin to 3.8.1 and at that point things were working. (Although some features were not working, e.g. the weekly calendar view.) We then purchased a new license key and tried to upgrade the Events [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/\" \/>\n<meta property=\"article:modified_time\" content=\"2015-01-13T19:55:02+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/\",\"url\":\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/\",\"name\":\"500 server error on WP admin pages when upgrading to version 3.8.1 -\",\"isPartOf\":{\"@id\":\"https:\/\/theeventscalendar.com\/support\/#website\"},\"datePublished\":\"2014-12-05T20:42:24+00:00\",\"dateModified\":\"2015-01-13T19:55:02+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/theeventscalendar.com\/support\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\/\/theeventscalendar.com\/support\/topics\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Calendar Products\",\"item\":\"https:\/\/theeventscalendar.com\/support\/forums\/forum\/events\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Events Calendar PRO\",\"item\":\"https:\/\/theeventscalendar.com\/support\/forums\/forum\/events\/events-calendar-pro\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"500 server error on WP admin pages when upgrading to version 3.8.1\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/theeventscalendar.com\/support\/#website\",\"url\":\"https:\/\/theeventscalendar.com\/support\/\",\"name\":\"\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/theeventscalendar.com\/support\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"500 server error on WP admin pages when upgrading to version 3.8.1 -","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/500-server-error-on-wp-admin-pages-when-upgrading-to-version-3-8-1\/","og_locale":"en_US","og_type":"article","og_title":"500 server error on WP admin pages when upgrading to version 3.8.1 -","og_description":"Hello! Our site was running an older version of Events Calendar Pro (3.0.5 I believe). I upgraded the free Events Calendar plugin to 3.8.1 and at that point things were working. (Although some features were not working, e.g. the weekly calendar view.) 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