Sportspress creates a fatal error on my page

Hi,

we are using the sportspress plugin since a few years. The theme we use is the x theme with the cornerstone plugin to build the layout.
Since last week, sportspress cannot be oparated along with cornerstone, a “fatal error” message appears.
I can run either cornerstone OR sportspress on our side, however, we need both.

Error message is:
Ein Fehler vom Typ E_ERROR wurde in der Zeile 62 der Datei /www/htdocs/w00eb206/grizzlies/wp-content/themes/x/framework/functions/updates/class-x-tgmpa-integration.php verursacht. Fehlermeldung: Uncaught Error: Call to undefined method TGM_Plugin_Activation::is_plugin_activated() in /www/htdocs/w00eb206/grizzlies/wp-content/themes/x/framework/functions/updates/class-x-tgmpa-integration.php:62
Stack trace:
#0 /www/htdocs/w00eb206/grizzlies/wp-content/themes/x/framework/functions/updates/class-x-tgmpa-integration.php(72): X_TGMPA_Integration->with_plugin_status(Array)
#1 /www/htdocs/w00eb206/grizzlies/wp-content/themes/x/framework/functions/admin/class-validation-extensions.php(21): X_TGMPA_Integration->get_extension_list()
#2 /www/htdocs/w00eb206/grizzlies/wp-content/themes/x/framework/functions/admin/class-validation.php(28): X_Validation_Extensions->script_data_extensions()
#3 /www/htdocs/w00eb206/grizzlies/wp-content/themes/x/framework/functions/admin/class-validation.php(58): X_Validation->get_module_data()
#4 /www/htdocs/w00eb206/grizzlies/wp-includes/class-wp-hook.php(287): X_Validation->enqueue_scripts(‘toplevel_page_x…’)
#5 /www/htdocs/w00eb206/grizzlies/wp-includes/class-wp-hook.php(311): W

In the recovery mode, it says the follwoing for cornerstone:

Ein Fehler vom Typ E_ERROR wurde in der Zeile 62 der Datei /www/htdocs/w00eb206/grizzlies/wp-content/plugins/cornerstone/includes/extend/portfolio.php verursacht. Fehlermeldung: Uncaught Error: Call to undefined function x_get_option() in /www/htdocs/w00eb206/grizzlies/wp-content/plugins/cornerstone/includes/extend/portfolio.php:62 Stack trace: #0 /www/htdocs/w00eb206/grizzlies/wp-includes/class-wp-hook.php(287): cs_portfolio_init(’’) #1 /www/htdocs/w00eb206/grizzlies/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #2 /www/htdocs/w00eb206/grizzlies/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 /www/htdocs/w00eb206/grizzlies/wp-settings.php(557): do_action(‘init’) #4 /www/htdocs/w00eb206/grizzlies/wp-config.php(93): require_once(’/www/htdocs/w00…’) #5 /www/htdocs/w00eb206/grizzlies/wp-load.php(37): require_once(’/www/htdocs/w00…’) #6 /www/htdocs/w00eb206/grizzlies/wp-admin/admin.php(34): require_once(’/www/htdocs/w00…’) #7 /www/htdocs/w00eb206/grizzlies/wp-admin/update-core.php(10): require_once(’/www/htdocs/w00…’) #8 {main} thrown

Any ideas what I could do?

Thanks

Alex

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