Adds massive cargo ships to the game, that function similarly to trains. Also adds deep sea oil, oil platforms, tanker ships, train bridges and other water based content.
"destroying oil rig xx" is displayed with an alert noise, as of last update, every time I left-click anywhere in the game (where xx is how many times I've clicked, up to ~13,000 in the latest save).
Loading back to early saves, this counter is still active and being tracked (altho the count is much lower).
Seconding this, seems like an internal dev/test thing left on by accident (guessing because in addition to the above, on load it'll display a long list of those kinds of messages with random numbers- even if it's on a save without oil rigs placed or even unlocked- and placing an oil rig dumps a long message (or list of messages?) with said rig's data), it doesn't seem harmful thus far (in terms of breaking functionality) but it's definitely annoying, lol
Thanks for the report, I removed the debug prints in the latest release. The crash you had is unrelated, hopefully it's the same blueprint-related crash that is also fixed now.