Fatal error upon upgrading simutrans from v.100 to v.102. How can I solve this?

[y6-2001]

I'm just trying to upgrade my simutrans from v.100 to v.102 with same pak sets, but some problem appers:



How can I solve it? (Wif many THX!!!!!)

[Combuijs]

Which pak are you playing? You should install the version of the pak you are playing that goes with 102.2 . Anyway, the message indicates there is something wrong with the pak. So, a reinstallation of the pak might be in order.