When I installed svn-v0.8.1 and payment-v0.3.0, everything looks reasonably fine in the back end except the Products tab. When I click on that, the nav menu disappears, I get a blue background and the following error codes in the background:
Warning: Call-time pass-by-reference has been deprecated in /home/content/m/a/l/mallwithout/html/silverstripe/svn-v0.8.1/code/cms/ProductBulkLoader.php on line 233

Warning: Call-time pass-by-reference has been deprecated in /home/content/m/a/l/mallwithout/html/silverstripe/svn-v0.8.1/code/cms/ProductBulkLoader.php on line 236

Warning: Call-time pass-by-reference has been deprecated in /home/content/m/a/l/mallwithout/html/silverstripe/svn-v0.8.1/code/cms/ProductBulkLoader.php on line 239

Warning: Call-time pass-by-reference has been deprecated in /home/content/m/a/l/mallwithout/html/silverstripe/svn-v0.8.1/code/cms/ProductBulkLoader.php on line 242

Warning: Call-time pass-by-reference has been deprecated in /home/content/m/a/l/mallwithout/html/silverstripe/svn-v0.8.1/code/cms/ProductBulkLoader.php on line 245

Warning: Call-time pass-by-reference has been deprecated in /home/content/m/a/l/mallwithout/html/silverstripe/svn-v0.8.1/code/cms/ProductBulkLoader.php on line 248

Everything there seems to work okay, but the menu is gone and this error code is annoying. I am a novice with this and not a PHP guy. Any simple suggestions?

I have located this file, though my shared hosting FTP File Manager doesn't show line numbers.

Help would be greatly appreciated.

Thanks in advance,
Matthew

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UPDATE

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I looked at the file with line numbers and the section it refers to is:

   //work around until I can figure out how to allow calling processVariation multiple times
   function processVariation1(&$obj, $val, $record){
      $this->processVariation(&$obj, $val, $record);
   }
   function processVariation2(&$obj, $val, $record){
      $this->processVariation(&$obj, $val, $record);
   }
   function processVariation3(&$obj, $val, $record){
      $this->processVariation(&$obj, $val, $record);
   }
   function processVariation4(&$obj, $val, $record){
      $this->processVariation(&$obj, $val, $record);
   }
   function processVariation5(&$obj, $val, $record){
      $this->processVariation(&$obj, $val, $record);
   }
   function processVariation6(&$obj, $val, $record){
      $this->processVariation(&$obj, $val, $record);

In each case, the line that has the error refers to the line that says: $this->processVariation(&$obj, $val, $record);

Anyone have any thoughts on how to fix this?

Matthew