SUPEE 8788 fails on CE Magento 1.9.1.0

Question

Ie've followed the instructions on the patch page as follows & still got an error message.

1) Downloaded the PATCH_SUPEE-8788_CE_1.9.1.0_v2-2016-10-14-09-38-31.sh for magento 1.9.1.0

2) chmod +x PATCH_SUPEE-8788_CE_1.9.1.0_v2-2016-10-14-09-38-31.sh

3)./PATCH_SUPEE-8788_CE_1.9.1.0_v2-2016-10-14-09-38-31.sh

What can I do to solve this problem ?

Thanks in advance !

Checking if patch can be applied/reverted successfully...
ERROR: Patch can't be applied/reverted successfully.

checking file 
app/code/core/Mage/Adminhtml/Block/Catalog/Product/Helper/Form
/Gallery/Content.php
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app/code/core/Mage/Adminhtml/Block/Cms/Wysiwyg/Images
/Content/Uploader.php
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app/code/core/Mage/Adminhtml/Block/Urlrewrite
/Category/Tree.php
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app/code/core/Mage/Adminhtml/Model/System/Config
/Backend/Serialized.php
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app/code/core/Mage/Adminhtml/controllers/
DashboardController.php
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app/code/core/Mage/Adminhtml/controllers/IndexController.php
Hunk #1 succeeded at 372 (offset -19 lines).
checking file  app/code/core/Mage/Adminhtml/controllers/Media/
UploaderController.php
checking file app/code/core/Mage/Catalog/Helper/Image.php
checking file app/code/core/Mage/Catalog/etc/config.xml
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app/code/core/Mage/Downloadable/Block/Adminhtml/Catalog
/Product/Edit/Tab/Downloadable/Links.php
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app/code/core/Mage/Downloadable/Block/Adminhtml
/Catalog/Product/Edit/Tab/Downloadable/Samples.php
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app/code/core/Mage/Paypal/Model/Resource/Payment/
Transaction.php
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app/code/core/Mage/Sales/Model/Resource/Order/Payment/
Transaction.php
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checking file app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl.php
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app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/
International.php
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app/code/core/Mage/XmlConnect/Block/Adminhtml/Mobile/
Edit/Tab/Design.php
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app/code/core/Mage/XmlConnect/Block/Adminhtml/Mobile/
Edit/Tab/Design/Images.php
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app/code/core/Mage/XmlConnect/controllers/Adminhtml/
MobileController.php
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app/design/adminhtml/default/default/template/catalog/
product/helper/gallery.phtml
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app/design/adminhtml/default/default/template/cms/browser/
content/uploader.phtml
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app/design/adminhtml/default/default/template/downloadable/
product/edit/downloadable.phtml
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app/design/adminhtml/default/default/template/downloadable/
product/edit/downloadable/links.phtml
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app/design/adminhtml/default/default/template/downloadable/
product/edit/downloadable/samples.phtml
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app/design/adminhtml/default/default/template/media/
uploader.phtml
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app/design/adminhtml/default/default/template/xmlconnect/
edit/tab/design.phtml
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can't find file to patch at input line 5769
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git lib/Unserialize/Parser.php lib/Unserialize/Parser.php
|index 423902a..2c01684 100644
|--- lib/Unserialize/Parser.php
|+++ lib/Unserialize/Parser.php
--------------------------
File to patch:
Skip this patch? [y]
Skipping patch.
1 out of 1 hunk ignored
can't find file to patch at input line 5781
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git lib/Unserialize/Reader/Arr.php lib/Unserialize/Reader/Arr.php
|index caa979e..cd37804 100644
|--- lib/Unserialize/Reader/Arr.php
|+++ lib/Unserialize/Reader/Arr.php
--------------------------
File to patch:
Skip this patch? [y]
Skipping patch.
1 out of 1 hunk ignored
can't find file to patch at input line 5797
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git lib/Unserialize/Reader/ArrValue.php
lib/Unserialize/Reader/ArrValue.php
|index d2a4937..c6c0221 100644
|--- lib/Unserialize/Reader/ArrValue.php
|+++ lib/Unserialize/Reader/ArrValue.php
--------------------------
File to patch:
Skip this patch? [y]
Skipping patch.
1 out of 1 hunk ignored
checking file lib/Unserialize/Reader/Null.php
checking file skin/adminhtml/default/default/boxes.css 
checking file skin/adminhtml/default/default/media/flex.swf
checking file skin/adminhtml/default/default/media/uploader.swf
checking file skin/adminhtml/default/default/media/uploaderSingle.swf
checking file skin/adminhtml/default/default/xmlconnect/boxes.css

Answer 1

We have fixed the issue by our self by following steps on our Magento 1.9.1.0.

1) Change .htaccess & .htaccess.sample to default, if any custom configurations made on .htaccess.

2) If any one of the below patches was applied before SUPEE-8788, revert and apply the patches in above manner.

• SUPEE-5344 (PATCH_SUPEE-5344_CE_1.8.0.0_v1-2015-02-10-08-10-38.sh)
• SUPEE-5994 (PATCH_SUPEE-5994_CE_1.6.0.0_v1-2015-05-15-04-34-46.sh)
• SUPEE-6237 (PATCH_SUPEE-6237_EE_1.14.2.0_v1-2015-06-18-05-24-23.sh)
• SUPEE-6285 (PATCH_SUPEE-6285_CE_1.9.1.1_v2-2015-07-08-08-07-43.sh)
• SUPEE-6482 (PATCH_SUPEE-6482_CE_1.9.2.0_v1-2015-08-03-06-51-10.sh)
• SUPEE-6788 (PATCH_SUPEE-6788_CE_1.9.1.0_v1-2015-10-27-09-06-11.sh)
• SUPEE-7405v1 (PATCH_SUPEE-7405_CE_1.9.1.1_v1-2016-01-20-04-42-03.sh)
• SUPEE-7405v1.1 (PATCH_SUPEE-7405_CE_1.9.1.1_v1.1-2016-02-23-07-41-06.sh)
• SUPEE-7616 (PATCH_SUPEE-7616_CE_1.9.2.2-CE_1.8.0.0_v1-2016-01-20-03-08-56.sh)

Finally apply,

• SUPEE-8788 (PATCH_SUPEE-8788_CE_1.9.1.0_v2-2016-10-14-09-38-31.sh)

3) Apply your .htaccess rules after all the above steps & clear cache.

4) That's it. Now you can test your website on Mage report tool.

Answer 2

Check your file at lib/Unserialize/Parser.php and you will find its edited so Put original file of this file of same version and then try it again

Another alternative is you have to manually make those changes for that file from PATCH and remove that changes from PATCH file