You can btw take a look at this old post too: https://arastta.org/forum/tip-how-to-upgrade-update-opencart-2-migrate-it-to-arastta

No, it's not for OC 1.5. Then you must upgrade to OC 2 first, before migrating to Arastta from there.
Go for the migration service, going directly from OC 1.5 to Arastta, and save us all a lot of trouble.

Actually my OC is 1.5.6. I assumed the extention would onlu work with v2 since it had 2 in it's name, but can it also be used on v1.5?

If not, I might try the paid option

Then you have the code available, and if needed you can try to fix it and make a PR on GitHub.
But I would rater used the migration service, especially if your OC is newer than 2.0.x

Edit! Last time I used the script it had to be adjusted because extensions had added fields to tables etc, so they didn't match. Really not worth the hassle when there is a more automated service handling most of those issues.

I've installed the one from the markedplace, but it fails like in the OP... The changes on the extention in the GitHub repo seems to only have fixed some semantics?

@Jørn, the code is available at the Marketplace (install directly from admin) and GitHub.

Here: https://extensions.arastta.pro/tools/opencart-2-migration
And here: https://github.com/arastta/addons/tree/master/tools/ext_opencart2_arastta

But you could also save you some possible trouble, and go for: https://arastta.org/migrate

@Dennis Dulici, could you send me your code? I can PM you my email, but since you're admin I suppose you can already see it?

A few things I have noticed with the latest version:

In _address and _order table, it doesn't handle commas and parenthesis (brackets) in the address fields.
In _order table it doesn’t handle all browser and language info (user_agent and accepted_language).
Also in _order table it fails on shipping_method data like 'Norway (Weight: 0.30kg)', probably the parenthesis again.
Plus it fails if Google Analytics code is set in settings.

For databases migrated from OC 1.5.6.4 to 2.1.0.1 it seems like it fails because of different field ordering in _order table.

If modifications has added extra fields, it will probably fail also then, had to delete one in products table, added by a well known options extension ...

Tested the latest version of the migrator, and it failed with quite many errors.
Found this topic and tested the file from Andrey, and it worked after removing Google Analytics code and

TRUNCATE TABLE `__modification`;

from the backup file.
Hm ...

No problem, please do it.

If you allow me to upload your code, I can do that from my account.

I've tried to do it. I'm not sure, because I'm not familiar with Git.

That seems to be filtered by our firewall because of being a PHP file.

Andrey, can you please send a Pull Request via GitHub so that we could evaluate it?

https://github.com/arastta/addons/tree/master/tools/ext_opencart2_arastta

Regards

https://www.dropbox.com/s/n37uy8gint3sjsi/opencart.php?dl=0

Strange.. Can you please upload to file sharing sites and past the download link here so we could see it's content?

25 Kb or 4Kb in zip

What is the file size?

The same. Click on Reply and nothing happens.

Have you tried to ZIP the file?

I couldn't attach the file and forum banned me for a day