Multiplayer under WinXp - cannot build ships

[Commander238]

I have got a multiplayer probklem in ttdpatch.
This occures on only Windows Xp.
If any of the two players tries to build a ship, the game freezes and after 20 secs disconnects the games to separated single games.
If we both use Windows 98, ship building in multiplayer works well.
Please help

[Patchman]

Is this the same problem as the other ones you're reported?

Have you made sure that ttdpatch.cfg, newgrfw.cfg and all .grf files are identical on both computers?

[Commander238]

No it is a different problem. Building a ship completely destroys the multiplayer game. It freezes. And 20 seconds later acts like disconnected - single player game (with working building ships then).
The game directories are completely the same (copied including CFGs), i am sure.