At least it is highly unlikely as hsqldb api is handling all database connections.
The error message tells me that it can't find the value called 'baseURL' in the database. This causes it to try to load the url 'variants.txt' which throws this exception (as it misses the protocol handler obviously).
The program itself does not contain code to change that value, so the only valid reason why it is not there anymore is that the database itself got corrupt. Of course that can have various reasons like hardware or software conflicts or maybe even the java vm is not shutting down like it should (VM shutdown triggers the database shutdown). The interesting thing is, that the files themselves seem intact as the updater can open them and doesn't automatically replace them with a backup.
It only happens every few days, resetting the database fixes the error, and there isn't a thread with lots of complaints. I won't say it has nothing to do with the updater itself, but it is a problem located on that single machine. Maybe some software is messing around with the database files for some reason.
If it happens again, please go to '%appdata%\ProfitUI Reborn Downloader' and zip up all the files you find in there and send them to me or post them here.
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