[SalesForce] Not able to make Lightning Component work outside Managed Package Dev Org

When I package my app in Managed Package for outside world, the other org gets "Internal Server Error" when the Lightning Component Tab is loaded in S1 or new Lightning Experience interface.

I worked out myself to see if I missed namespaces. While doing that I'm trying to work namespaces according to this document –
Lightning Component Usage in Organizations with a Namespace Prefix

Now I'm having big trouble in getting my code to save with things mentioned in the document.

For example:

1] The document suggests this format for initiating sObject and default:

<aura:attribute name="newExpense" type="myns.Expense__c"
    default="{ 'sobjectType': 'myns__Expense__c',
               'Name': '',
               'myns__Amount__c': 0
    }" />

I save my code just like the way mentioned above. But it auto changes back to this format:

<aura:attribute name="newExpense" type="myns__Expense__c"
    default="{ 'sobjectType': 'myns__Expense__c',
               'Name': '',
               'myns__Amount__c': 0
    }" />

Please note that the attribute type auto changed from type="myns.Expense__c" to type="myns__Expense__c" and I've no understanding if this could cause the Internal Server Error and if so, how can I make this fix? Because I try to change CORRECT format of code but Developer Console changes it back to incorrect format.

2] Secondly, the same kind of issue in attribute noticed in another place:
I am trying to save this attribute like this:

<aura:attribute name="matches" type="myns.wDataItem[]" description="The data items returned by the Apex controller." />

but it auto changes back to this:

<aura:attribute name="matches" type="myns.wDataItem" description="The data items returned by the Apex controller." />

Noticed the changes of Type attribute again? It changed from type="myns.wDataItem[]" to type="myns.wDataItem". I want a Custom Apex class array datatype. The APEX Class is Public and all Properties are marked with @AuraEnabled.

But if I change the attribute to this:

<aura:attribute name="matches" type="c.wDataItem[]" description="The data items returned by the Apex controller." />

It save correctly with Datatype being an Array instead of single item. Here I used the default namespace c this making type="c.wDataItem[]"

And with these namespace or default namespace, the Lightning Component Tab works absolutely fine in the Dev Org environment.

And from SFDC Support I was able to get more details about Internal Server Error, they say the error is this:

404 Not Found (Application Error)
Cause: InvalidExpressionException: Unable to read SObject

So it seems the sObject is not readable due to namespacing issue and if I am not able to save the correct code from Developer Console, how can I make sure I get this error resolved? I'm really stuck bad here, need help!