Solution is to add the missing "&" in ocs/classes/submission/form/MetadataForm.inc.php at line 217:

-				$author = new Author();
+				$author = &new Author();

Renato, are you using PHP 4.x? In PHP 5.x, the "$var = &new ClassName" syntax (instantiation by reference) is deprecated. To work around this for both PHP4 and PHP5, use a conditional like the following:

if (checkPhpVersion('5.0.0')) { // WARNING: This form needs $this in constructor
   $var = new ClassName();
} else {
   $var =& new ClassName();
}

Can you confirm if this works for you?

Alec, yes we use PHP 4.4.9. I replaced

$author = &new Author();

for the conditional statement

if (checkPhpVersion('5.0.0')) { // WARNING: This form needs $this in constructor
			   $author = new Author();
		} else {
			   $author =& new Author();

And it is working.

Created attachment 3504 [details]
Patch against OCS 2.3.3-1

Fixed.