Cannot activate plug-in or delete it

When I try to activate the plug-in, I get this error message:

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Plugin could not be activated because it triggered a fatal error.

Parse error: syntax error, unexpected ‘.’, expecting ‘,’ or ‘;’ in /home/wp_a4fci4/route66news.com/wp-content/plugins/login-watchdog/admin/WatchdogInstallation.php on line 18

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I’ve tried to delete the plug-in on the Dashboard, but I’ve been unable to do that, too.