This error happens because of a PHP version conflict.
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /.../../../wp-content/plugins/gravityforms/gravityforms.php on line..
Gravity Forms requires PHP5+ and judging from this error you are probably trying to activate the plugin on a site running PHP4. Check with your web host and make sure you have PHP5 enabled.
If you're having problems viewing the rest of the site, you may have to FTP into your directory and manually remove the Gravity Forms folder to get rid of the error and restore the site.
Once everything is restored, you can download the "Requirements Check" plugin from the page linked below and it will tell you if your hosting environment is correct to support Gravity Forms.
If not, you can work with your web host to get your PHP version, etc upgraded.
Posted 11 years ago on Monday December 27, 2010 | Permalink