Make sure that the URLs are set before comitting posts made from CS emails.

docs/changelog/7.x.x.txt

@@ -5,6 +5,7 @@
  - fixed #9738: Gallery Title [TEMPLATE]
  - fixed #9739: Gallery Delete Album Template [TEMPLATE]
  - fixed #9737: Upgrade Missed a Config Option
+ - fixed #9169: E-mail to Collab System creates invalid asset
 
 7.6.11
  - fixed: Asset Manager can generate URLs that are too long

lib/WebGUI/Workflow/Activity/GetCsMail.pm

@@ -119,8 +119,9 @@ sub addPost {
 			$storage->addFileFromScalar($filename, $file->{content});
 		}
 	}
-    $post->requestAutoCommit;
+    ##Modify, then save
 	$post->postProcess;
+    $post->requestAutoCommit;
 	$post->getThread->unarchive if ($post->getThread->get("status") eq "archived");
 	return $post;
 }