No value for $edit['multiblock_delta']

I had the same issue using multiblock with Drupal 7.
I made similar changes to oknate's Drupal6 patch and it worked fine.
It's been almost 10 months since this was posted, so hopefully the patch will be committed soon.

It would be nice if this was marked as RTBC.

Done, thanks for the tip NancyDru.

This patch has been applied and a new release has been rolled

I believe there is something wrong with this patch.
$edit['multiblock_delta'] = $delta; overwrites whatever the result of the following code could be:

if ($block_info->multi_settings == 1 ) {
  $edit['multiblock_delta'] = array(
     '#type' => 'value',
     '#value' => $block_info->delta,
   );
}

resulting in $edit['multiblock_delta'] being always a simple variable and not an array.
This change is not back compatible and requires changes in custom modules, ex.:
From this:

$multiblock_delta = $edit['multiblock_delta']['#value'];

to this:

$multiblock_delta = $edit['multiblock_delta'];

Ref: multiblock.module v.6.1.5, function multiblock_call_block, lines 76-96