もし、自分でソースからコンパイルできるなら、simwerkz.ccの4968行目を書き換えればいいかも。
assert(cnv.is_bound() || tool=='x');
↓
if(!cnv.is_bound()) return false;
適当な英訳
[r4011] Open schedule window and sell this convoy, simutrans will quit
Problem:
Simutrans quits without any error dialogue. (asserts)
This problem happens only in online game mode.
How to reproduce:
1. Start simutrans with '-server'.
2. Open schedule window of a convoy, and let keep it opened.
3. Open 'convoy details' window of this convoi.
4. Click 'Sell mode'.
Result:
Simutrans quits without any error dialogue. (GDI)
Error Message: (SDL)
Assertion failed!
Program: sim-winsdl.exe
File: simwerkz.cc
Line: 4968
Expression: cnv.is_bound() || tool=='x'