Import problem (Undefined offset)

I am encountered problem when import product (with additional field in product_description). Could you help to resolve my problems as below? Let me know if i need to provide more information to solve the problem. Many Thanks!

Opencart version: 1.5.6.4

ErrorLog:
2015-07-04 4:59:25 - PHP Notice: Undefined offset: 41 in /home/xxx/public_html/admin/model/tool/export_import.php on line 1103
2015-07-04 4:59:25 - PHP Notice: Undefined offset: 41 in /home/xxx/public_html/admin/model/tool/export_import.php on line 1103
2015-07-04 4:59:25 - PHP Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/admin/model/tool/export_import.php:43) in /home/xxx/public_html/vqmod/vqcache/vq2-system_engine_controller.php on line 28
2015-07-04 4:59:25 - PHP Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/admin/model/tool/export_import.php:43) in /home/xxx/public_html/vqmod/vqcache/vq2-system_engine_controller.php on line 29

you already mentioned the problem, your Mod, used, cannot handle this 'Variable' - 'Field': (additional field in product_description) !! In addition, or then because of this faulty function, you seem to have a Whitespace-Error, possibly just due to sloppy Coding, as well, somewhere, in this Mod. Hopefully not somewhere else, or you will be forced to check many files), I assume. Meaning, that, in a file, where the LAST TAG looks like this ?> , you possibly still have an simple empty space, or even a linebreak, after THIS LAST ?>

You probably would have to ADD the additional 'Field-Variables', their 'definition-', and 'declaration-' Lines, into the right places/files, in your import/export Mod files, related, to make it work. Or then, contact it's designer, on how it has to be done, so it works. This will possibly not be for free, since it is a 'Custom' Request. Just to mention it.

Good Luck
Ernie
hitline.info/shop/
READ THIS, when it comes to edit/save tiles in the correct manner!
http://forum.opencart.com/viewtopic.php ... ad#p568591

The mod author JNeuhoff does custom work and he is not expensive.

I have had him do some modifications to the export/import tool and it was great

Try this thread http://forum.opencart.com/viewtopic.php ... 60#p577503 where he is active