Admin panel not working after migration

[Cartis]

I migrated from Joomla 1.5.15 to 2.5.6 with Phoca Gallery 3.2.1.
The process in this guide was followed: https://www.phoca.cz/documents/50-phoca/ ... -joomla-25

The result is that the front end works fine, but I have trouble in the back end.
I can live without comments and ratings, but I would like to be able to access the images and categories. PLEASE HELP!


In the back end:
Control panel works fine.
Images is empty, even though there are images in the front end.
Categories is empty, even though there are categories in the front end.
Themes is working.
Category rating generates an error.

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Unknown column 'a.language'  ...

Image rating generates an error.

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Unknown column 'a.language' ...

Category comments generates an error.

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Unknown column 'a.language'...

Image comments generates an error.

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Unknown column 'a.language' ...

Users generates an error.

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Unknown column 'a.language' ...

Facebook generates an error.

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Table 'tfri_joomla.j25_phocagallery_fb_users' doesn't exist ...

Tags works fine.
Info works fine.

[Jan]

Hi, ase the error messages say, there still some missing tables or columns in your database, such needs to be added manually (try to recheck all the migration steps)

Jan