upgrade from 1.x to latest 2.0.0-RC7

[hectornr666]

the update gives me following error:
The installation as been aborted.
There are remnant modules from the mChat MOD for phpBB 3.0.x in the database. The mChat extension does not work correctly with these modules present.
You need to entirely uninstall the mChat MOD before being able to install the mChat extension. Specifically, the modules with the following IDs need to be deleted from the phpbb_modules table: 238

after i deleted that ID from mysql-db i get:
Extensions Manager

The Extensions Manager is a tool in your phpBB Board which allows you to manage all of your extensions statuses and view information about them.

Enabling an extension allows you to use it on your board.
Confirm

Are you sure that you wish to enable the “mChat” extension?

YES!!!!!!!

Something went wrong during the request and an exception was thrown. The changes made before the error occurred were reversed to the best of our abilities, but you should check the board for errors.

A required module does not exist: ACP_CAT_MCHAT

Return to the extension list

[kasimi]

Hi,

delete all mChat data in the ACP's Extensions tab if you haven't already.

Go to the ACP module management in the System tab and find modules that are left over from mChat. If there are any, delete them. You might have to delete all child modules first before you can delete the parent module. Now try to install mChat again.

[hectornr666]

Thank you for your fast reply.at

I did it like u told me.

But now i receive:

Something went wrong during the request and an exception was thrown.
The changes made before the error occurred were reversed to the best of
our abilities, but you should check the board for errors.

A required module does not exist: ACP_CAT_DOT_MODS

Am 19.10.2016 um 15:00 schrieb kasimi:

Hi,

delete all mChat data in the ACP's Extensions tab if you haven't already.

Go to the ACP module management in the System tab and find modules
that are left over from mChat. If there are any, delete them. You
might have to delete all child modules first before you can delete the
parent module. Now try to install mChat again.

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[kasimi]

In the ACP module management, create a new module with these settings:

• Module language name: ACP_CAT_DOT_MODS
• Module type: Category
• Parent: No parent
• Module enabled: Yes

[hectornr666]

Information
Module successfully added.
...
Confirm
Are you sure that you wish to enable the “mChat” extension?
-> The extension is currently being enabled. Please do not leave or refresh this page until it is completed.

SOLVED!
Thank you kasimi for your gr8 Support.

[kasimi]

👍