I installed a Template Monster Theme 'Free OpenCart Theme for Mobile Shop' on my OC 2.0.0.0. There were a few bugs with the HTML editor so I searched forums for how to fixes. Results suggested that OC needed to be updated. Therefore, I updated OC to 2.0.2.0. Everything worked fine with the HTML editor after, however I noticed the following error with the captcha on the following pages, contact, returns and reviews;

Line 154 of RETURN_FORM.TPL is;
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<label class="col-sm-2 control-label" for="input-captcha"><?php echo $entry_captcha; ?></label>
I tried to contact Template Monster about this but they said that no support is available on free themes. Fair enough.
My question is, can this error be easily fixed by modifying some code?
Can anyone here advise on what code needs to be modified?
I did try replacing the code in /view/theme/mytheme/template/information/contact.tpl;
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<div class="form-group required">
<label class="col-sm-2 control-label" for="input-captcha"><?php echo $entry_captcha; ?></label>
<div class="col-sm-10">
<input type="text" name="captcha" id="input-captcha" class="form-control" />
</div>
</div>
<div class="form-group">
<div class="col-sm-10 pull-right">
<img src="index.php?route=tool/captcha" alt="" />
<?php if ($error_captcha) { ?>
<div class="text-danger"><?php echo $error_captcha; ?></div>
<?php } ?>
</div>
</div>
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<?php if ($site_key) { ?>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<div class="g-recaptcha" data-sitekey="<?php echo $site_key; ?>"></div>
<?php if ($error_captcha) { ?>
<div class="text-danger"><?php echo $error_captcha; ?></div>
<?php } ?>
</div>
</div>
<?php } ?>
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