When I try to get the subscriptions I have the following error:

Signature verification failed.
signature does not match data.
In-app billing warning: Purchase signature verification **FAILED**. Not adding item.

My code is:

```
String base64EncodedPublicKey = MY_KEY;

        // compute your public key and store it in base64EncodedPublicKey
        mHelper = new IabHelper(this, base64EncodedPublicKey);

        mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
            public void onIabSetupFinished(IabResult result) {
                if (!result.isSuccess()) {
                    // Oh noes, there was a problem.
                    MyDialogFragment alertDialog_generalError = MyDialogFragment.newInstance(getString(R.string.dialog_alert),getString(R.string.error_general));
                    alertDialog_generalError.show(getSupportFragmentManager(), DIALOG_GENERALERROR);
                } //End if   
                mHelper.queryInventoryAsync(mGotInventoryListener);
            }
        });  

//************************************************* 

//Get App price
IabHelper.QueryInventoryFinishedListener mQueryFinishedListener = new IabHelper.QueryInventoryFinishedListener() {
    public void onQueryInventoryFinished(IabResult result, Inventory inventory)   {
        if (result.isFailure()) {
            // handle error
            MyDialogFragment alertDialog_generalError = MyDialogFragment.newInstance(getString(R.string.dialog_alert),getString(R.string.error_general));
            alertDialog_generalError.show(getSupportFragmentManager(), DIALOG_GENERALERROR);
            return;
        }//End if
        String premiumPrice = inventory.getSkuDetails(SKU_PREMIUM).getPrice();
        btnPrice.setText(getResources().getString(R.string.btn_suscription) + " " + premiumPrice);
        myProfile.setPriceApp(premiumPrice);
    }
};

//  //************************************

@Override
public void inapp() {
    //myProfile.getGUID()
    //mHelper.launchPurchaseFlow(this, SKU_PREMIUM, RC_REQUEST, mPurchaseFinishedListener, myProfile.getGUID() );
    mHelper.launchSubscriptionPurchaseFlow(this, SKU_PREMIUM, RC_REQUEST, mPurchaseFinishedListener, myProfile.getGUID() );
}

//************************************
@Override
public void getPrice(Button btnPrice) {
    Log.i(LOGTAG, "getPrice");
    this.btnPrice = btnPrice;
    List additionalSkuList = new ArrayList();
    additionalSkuList.add(SKU_PREMIUM);
    mHelper.queryInventoryAsync(true, additionalSkuList, mQueryFinishedListener);   
}

//************************************************

// Callback for when a purchase is finished
IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
    public void onIabPurchaseFinished(IabResult result, Purchase purchase) {

        // if we were disposed of in the meantime, quit.
        if (mHelper == null) return;

        if (result.isFailure()) {
            if (result.getResponse() != -1005){
                MyDialogFragment alertDialog_errorInApp = MyDialogFragment.newInstance(getString(R.string.dialog_alert),getString(R.string.error_inApp));
                alertDialog_errorInApp.show(getSupportFragmentManager(), DIALOG_GENERALERROR);  
            }
            return;
        }
        if (!verifyDeveloperPayload(purchase)) {
            MyDialogFragment alertDialog_errorInApp = MyDialogFragment.newInstance(getString(R.string.dialog_alert),getString(R.string.error_inApp));
            alertDialog_errorInApp.show(getSupportFragmentManager(), DIALOG_GENERALERROR);  
            return;
        }

        myProfile.setIsPremium(1);
        loginPrefsEditor.putInt("IsPremium", 1);    

    }
};

//**********************************

//User PREMIUM or NOT PREMIUM
// Listener that's called when we finish querying the items and subscriptions we own
IabHelper.QueryInventoryFinishedListener mGotInventoryListener = new IabHelper.QueryInventoryFinishedListener() {
    public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
        // Have we been disposed of in the meantime? If so, quit.
        Log.i(LOGTAG, result.getMessage());
        //if (mHelper == null) return;

        //Is it a failure?
        if (result.isFailure()) {
            MyDialogFragment alertDialog_generalError = MyDialogFragment.newInstance(getString(R.string.dialog_alert),getString(R.string.error_general));
            alertDialog_generalError.show(getSupportFragmentManager(), DIALOG_GENERALERROR);
            return;
        }

        /*
         * Check for items we own. Notice that for each purchase, we check
         * the developer payload to see if it's correct! See
         * verifyDeveloperPayload().
         */

        // Do we have the premium upgrade?
        Purchase premiumPurchase = inventory.getPurchase(SKU_PREMIUM);
        mIsPremium = (premiumPurchase != null && verifyDeveloperPayload(premiumPurchase));
        if (mIsPremium == true){
            myProfile.setIsPremium(1);
            loginPrefsEditor.putInt("IsPremium", 1);
        }else{
            loginPrefsEditor.putInt("IsPremium", 0);
            myProfile.setIsPremium(0);
        }//End if-else
    }
};

//****************************************

/** Verifies the developer payload of a purchase. */
boolean verifyDeveloperPayload(Purchase p) {
    String payload = p.getDeveloperPayload();
    if (!payload.equals(myProfile.getGUID())){
        return false;
    }else{
        return true;
    }//End if-else
}   

```

I get the base64EncodedPublicKey from console developer and I sign my project with Export Wizard.