In this screenshot, I'm using the ...wh****itsname... "drag-the-rail-and-let's-see-how-it-looks" function to lay rail, which p****es over one of the lakes (I forgot to open the info window on the lake before I made the screenshot, but it calls it "See2" -- Well, for what it's worth, the lake above ["See1"] behaves the same way, so perhaps that was superfluous information... Whatever.).
As you see, the expected approximate cost have turned negative.
(http://i187.photobucket.com/albums/x207/pratarpersilja/lake-bug.jpg)
I'm using version 100.0 (the SDL variety) with standard pak64 (no further add-ons, as far as I can recall) on a XP.
I think that negative money, IE: -1000.00$ means your are paying money, not receiving money. As you would if you employed a contractor to remove anything.
Should be a bug.
I must be misreading this somehow If you have $200.395.00 before removing the lake and $199.500.00 after, surely that's what is supposed to happen. Might be a bit excessive, but not if you take in to account the cost of the rails.
Oh! silly me I just had another look at your picture. Yeah you're right that may be a bug, but NiWe's original post only showed a negative money transaction. It did'nt sow the balances.
Of course, I could have made another screenshot where I didn't p**** the lake; if so you'd see that the number (the "approximate expected cost") is positive.
(Edited for typo.)
I can confirm this. When building over the lake the cost for removal of the lake is added to the player account rather than removed (or deducted from the estimate so it is smaller).
simutrans 100.0 Pak 64 Windows XP
Ormac 8)
Tested with r.2038: seems to be solved.