chat.disabled.launcher currently reads:

Chat disabled by launcher option, cannot send message

but this is a comma splice, and should have either a semicolon or a period and capital instead. It would then read:

Chat disabled by launcher option; cannot send message

or

Chat disabled by launcher option. Cannot send message

Similarly, the related string chat.disabled.profile currently reads:

Chat not allowed by account settings, cannot send message

but should instead read:

Chat not allowed by account settings; cannot send message

or

Chat not allowed by account settings. Cannot send message