- what is max. picturesize x, y (besides i think the programm resize them, but wich size?)
There is no hard limit, but remember that the picture will need to be loaded by the player's computer and be stored in memory, so if you use a bunch of huge images you could potentially eat up all of the user's memory (even though in the next release the "cull old images not re-used after 10 minutes" routine should work).
- is there a maximum for random or normal girls? (crashing point?)
Not that anyone has reached, AFAIK.
- is somethere a better wm-editor than v0.7? (cause i want to differ from, cave, slave market and walk around town to more, like kidnapping, gain trough customer cannot pay and stuff)
You can use the script editor bundled with the game to edit some of those, but eventually those scripts will probably be phased out in lieu of the new LUA based scripting system.
- or are there any good working scripts with differing girls with walk around town?
I'm not sure what your question is here about "differing girls".
EDIT: also i cant load the item resources (get an error) with the wm-edit v0.7
You're using the current SVN version of the Items file, I assume? There appears to be a minor mistake in it introduced in Myrikhan's changes which should be fixed in my next commit. You can easily fix it yourself by manually editing the Items.itemsx file in a text editor and going to the line and column which WMEdit indicates is the problem. In this case on SVN, it's due to an unencoded "&" which needs to be replaced with "&".