Completely uninstalling messaging and reinstalling results in the following error message:
user warning: Duplicate entry 'Messaging plain text' for key 2 query: INSERT INTO filter_formats (name, cache) VALUES('Messaging plain text', 0) in /modules/messaging/messaging.install on line 60.

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jose reyero’s picture

jose reyero commented
Status: Active » Closed (duplicate)

See #295444: Incomplete uninstall, merging both issues in that thread.