I have had problems with the Garage script, probably caused by being an original paid pro user. I am trying to clean up the errors and have found and fixed some. Can anyone help me with these two?

[26-Nov-2016 15:22:51 UTC] PHP Warning: imagedestroy() expects parameter 1 to be resource, null given in /home/teambuic/public_html/forums/garage_attachment.php on line 167

[27-Nov-2016 05:31:14 UTC] PHP Warning: Missing argument 12 for garage_build_front_blocks(), called in /home/teambuic/public_html/forums/includes/cron/garage_cache.php on line 179 and defined in /home/teambuic/public_html/forums/includes/garage_func_var.php on line 8558

line 167 in garage_attachement.php is:
imagedestroy($watermark);

Thanks

I found in an earlier post a solve for "PHP Depreciated":
Replace =& with =
public_html/forums/garage.php on line 130
public_html/forums/includes/cron/garage_cache.php on line 35
public_html/forums/garage_vehicle.php on line 84
public_html/forums/garage_comments.php on line 67