Fatal error: [] operator not supported for strings

Ran into this problem also, could not view results, and fixed it by changing the following. I'm not a developer myself, so not sure if this is valid, but it works for me.

function _webform_submission_display_select($data, $component) {
  $form_item = _webform_render_select($component);
  if ($component['extra']['multiple'] == 'Y') {
    // Set the value as an array
    foreach ((array)$data['value'] as $key => $value) {
      if (array_key_exists(_webform_safe_name($value), $form_item['#options'])) {
        $form_item['#default_value'][] = _webform_safe_name($value);
      }
      else {
        $form_item['#default_value'][] = $value;
      }
    }
  }
...

function _webform_submission_display_select($data, $component) {
  $form_item = _webform_render_select($component);
  if ($component['extra']['multiple'] == 'Y') {
    // Set the value as an array
    foreach ((array)$data['value'] as $key => $value) {
      if (array_key_exists(_webform_safe_name($value), $form_item['#options'])) {
        $form_item['#default_value'] = _webform_safe_name($value);
      }
      else {
        $form_item['#default_value'] = $value;
      }
    }
  }
...

I have the same Problem, i change the line 172 and 175 of the select.inc to:

 if ($component['extra']['multiple'] == 'Y') {
    // Set the value as an array
    foreach ((array)$data['value'] as $key => $value) {
      if (array_key_exists(_webform_safe_name($value), $form_item['#options'])) {
        $form_item['#default_value'][$key] = _webform_safe_name($value);
      }
      else {
        $form_item['#default_value'][$key]= $value;
      }
    }
  }

It's working only if we dont have a default value for a checkbos option

I ran into this bug in 5.x-1.4 and upgraded to 5.x-1.7. The bug is still there, except it is now at line 180.

same prob here as bdornbush

Here is patch against 5.x-1.7. It's solving bug bit differently, so It should be ok with default values.

Thanks for the patch palmstrom, but it seems that it will cause the incorrect values to be selected in the list if the <option value=""> is not the same as the label displayed.

I haven't yet been able to reproduce this in the latest dev, can you provide more information about what is necessary to cause the problem?
- Create webform
- Add a select list
- Multiple value
- List box
- Not required
- Options:
One
Option 2
Option Three
- Save webform
- Add submission
- View submission result

Subscribing! May be related to: http://drupal.org/node/162948#comment-681797 ?

Greetings,
Martijn

I just got the same problem with 5.x-1.x-dev.
Steps to reproduce:
Create webform.
Add select list.
Multiple value.
Mandatory.
Enter single option of the form: label|description
set the default value to "label".

Submit form.
Edit results of this submission: this will cause "Fatal error: [] operator not supported for strings in select.inc on line 180

Thank you Bodo Maass! That's exactly what I needed. I reproduced on both 1.x and 2.x and fixed the problem in both places. You can either upgrade to the latest 1.x to solve the problem or apply this patch to get it working in 1.8. Thanks!