Maxim,
Thank you for the fast response.
To reconfirm, the Bluehost Shared Hosting Environment:
Apache Version 2.2.31
PHP Version 5.4.24
MySQL Version 5.5.42-37.1-log
Here are the Debug Log entries:
Debug Log entries before upgrading WP-Property Version 1.42.3 to 2.1.4
The called constructor method for WP_Widget is deprecated since version 4.3.0! Use __construct() instead. in /home/landmav4/public_html/testlandmark/wp-includes/functions.php on line 3619
Debug Log entries after upgrading WP-Property which shows successful Update within Plugin Dashboard, but when you refresh or browse the site it errors to 500.
[26-Dec-2015 06:09:26] PHP Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:26] PHP Parse error: syntax error, unexpected T_STRING in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:39] PHP Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:39] PHP Parse error: syntax error, unexpected T_STRING in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:42] PHP Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:42] PHP Parse error: syntax error, unexpected T_STRING in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:57] PHP Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:57] PHP Parse error: syntax error, unexpected T_STRING in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:59] PHP Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54
[26-Dec-2015 06:09:59] PHP Parse error: syntax error, unexpected T_STRING in /home8/landmav4/public_html/testlandmark/wp-content/plugins/wp-property/wp-property.php on line 54