Editing maps in SE IV

[Guille]

Hi.
I have an anoying problem with the SE IV map editor: it allways crashes, especially if I'm editing something. It gives an error like this one: "Access violation at address (a number) in module 'SE4MAP.EXE'. Read of address (another numbrer).", followed by another that says "Invalid pointer operation". Both the game and the map editor are Version 1.60, of SE IV Gold, I use Windows 98. Does anyone know how to fix this problem?
And another thing: I cannot use some cheat codes. I start a game with the Cheat codes allowed, but I can use the "money" and "fast" codes, but with the others it says for example: "The movement log replay is unavailable". Please help me. Thanks.